update downloads for python, ruby, rust, java runtimes (#481)

diff --git a/_layouts/downloads.html b/_layouts/downloads.html
index b07a7b5..6ca98ae 100644
--- a/_layouts/downloads.html
+++ b/_layouts/downloads.html
@@ -215,15 +215,15 @@
                       <div class="component-releases-structure theme-deeper-sky-blue">
                         <p><ctitle>OpenWhisk Runtime Java</ctitle>Supports functions written for Java 8 (OpenJDK 8, JVM OpenJ9).</p>
                         <div class="component-release-artifact-list border-deeper-sky-blue">
-                          <version>1.15.0</version>
+                          <version>1.16.0</version>
                           <a
-                            href="https://www.apache.org/dyn/closer.cgi/openwhisk/openwhisk-runtime-java-1.15.0-sources.tar.gz">
+                            href="https://www.apache.org/dyn/closer.cgi/openwhisk/openwhisk-runtime-java-1.16.0-sources.tar.gz">
                             Source code</a>
                           <a
-                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-java-1.15.0-sources.tar.gz.sha512">
+                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-java-1.16.0-sources.tar.gz.sha512">
                             SHA-512 checksum</a>
                           <a
-                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-java-1.15.0-sources.tar.gz.asc">
+                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-java-1.16.0-sources.tar.gz.asc">
                             PGP signature</a>
                         </div>
                       </div>
@@ -261,17 +261,17 @@
                       </div>
 
                       <div class="component-releases-structure theme-deeper-sky-blue">
-                        <p><ctitle>OpenWhisk Runtime Python</ctitle>Supports functions written for Python v3.6 and v3AI which includes AI library support.</p>
+                        <p><ctitle>OpenWhisk Runtime Python</ctitle>Supports functions written for Python v3 and v3AI which includes AI library support.</p>
                         <div class="component-release-artifact-list border-deeper-sky-blue">
-                          <version>1.15.0</version>
+                          <version>1.16.0</version>
                           <a
-                            href="https://www.apache.org/dyn/closer.cgi/openwhisk/openwhisk-runtime-python-1.15.0-sources.tar.gz">
+                            href="https://www.apache.org/dyn/closer.cgi/openwhisk/openwhisk-runtime-python-1.16.0-sources.tar.gz">
                             Source code</a>
                           <a
-                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-python-1.15.0-sources.tar.gz.sha512">
+                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-python-1.16.0-sources.tar.gz.sha512">
                             SHA-512 checksum</a>
                           <a
-                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-python-1.15.0-sources.tar.gz.asc">
+                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-python-1.16.0-sources.tar.gz.asc">
                             PGP signature</a>
                         </div>
                       </div>
@@ -279,15 +279,15 @@
                       <div class="component-releases-structure theme-deeper-sky-blue">
                         <p><ctitle>OpenWhisk Runtime Ruby</ctitle>Supports functions written for Ruby v2.5 and v2.6.</p>
                         <div class="component-release-artifact-list border-deeper-sky-blue">
-                          <version>1.15.0</version>
+                          <version>1.16.0</version>
                           <a
-                            href="https://www.apache.org/dyn/closer.cgi/openwhisk/openwhisk-runtime-ruby-1.15.0-sources.tar.gz">
+                            href="https://www.apache.org/dyn/closer.cgi/openwhisk/openwhisk-runtime-ruby-1.16.0-sources.tar.gz">
                             Source code</a>
                           <a
-                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-ruby-1.15.0-sources.tar.gz.sha512">
+                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-ruby-1.16.0-sources.tar.gz.sha512">
                             SHA-512 checksum</a>
                           <a
-                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-ruby-1.15.0-sources.tar.gz.asc">
+                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-ruby-1.16.0-sources.tar.gz.asc">
                             PGP signature</a>
                         </div>
                       </div>
@@ -295,15 +295,15 @@
                       <div class="component-releases-structure theme-deeper-sky-blue">
                         <p><ctitle>OpenWhisk Runtime Rust</ctitle>Supports functions written for Rust v1.34.</p>
                         <div class="component-release-artifact-list border-deeper-sky-blue">
-                          <version>1.1.0</version>
+                          <version>1.2.0</version>
                           <a
-                            href="https://www.apache.org/dyn/closer.cgi/openwhisk/openwhisk-runtime-rust-1.1.0-sources.tar.gz">
+                            href="https://www.apache.org/dyn/closer.cgi/openwhisk/openwhisk-runtime-rust-1.2.0-sources.tar.gz">
                             Source code</a>
                           <a
-                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-rust-1.1.0-sources.tar.gz.sha512">
+                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-rust-1.2.0-sources.tar.gz.sha512">
                             SHA-512 checksum</a>
                           <a
-                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-rust-1.1.0-sources.tar.gz.asc">
+                            href="https://downloads.apache.org/openwhisk/openwhisk-runtime-rust-1.2.0-sources.tar.gz.asc">
                             PGP signature</a>
                         </div>
                       </div>