Upgrade NodeJS runtimes to consume fixes from the NodeJs June release (#172)

diff --git a/core/nodejs10Action/CHANGELOG.md b/core/nodejs10Action/CHANGELOG.md
index 758468c..9607825 100644
--- a/core/nodejs10Action/CHANGELOG.md
+++ b/core/nodejs10Action/CHANGELOG.md
@@ -23,7 +23,7 @@
 Changes:
   - Update OpenWhisk npm package
 
-Node.js version = [10.20.1](https://nodejs.org/en/blog/release/v10.20.1/)
+Node.js version = [10.21.0](https://nodejs.org/en/blog/release/v10.21.0/)
 OpenWhisk version = [OpenWhisk v3.21.2](https://www.npmjs.com/package/openwhisk)
 
 ## Apache 1.15
diff --git a/core/nodejs10Action/Dockerfile b/core/nodejs10Action/Dockerfile
index 17f2707..3d6506a 100644
--- a/core/nodejs10Action/Dockerfile
+++ b/core/nodejs10Action/Dockerfile
@@ -15,7 +15,7 @@
 # limitations under the License.
 #
 
-FROM node:10.20.1-stretch
+FROM node:10.21.0-stretch
 
 # Initial update and some basics.
 #
diff --git a/core/nodejs12Action/CHANGELOG.md b/core/nodejs12Action/CHANGELOG.md
index cec59e0..027975e 100644
--- a/core/nodejs12Action/CHANGELOG.md
+++ b/core/nodejs12Action/CHANGELOG.md
@@ -23,7 +23,7 @@
 Changes:
   - Update OpenWhisk npm package
 
-Node.js version = [12.16.2](https://nodejs.org/en/blog/release/v12.16.2/)
+Node.js version = [12.18.0](https://nodejs.org/en/blog/release/v12.18.0/)
 OpenWhisk version = [OpenWhisk v3.21.2](https://www.npmjs.com/package/openwhisk)
 
 ## Apache 1.15
diff --git a/core/nodejs12Action/Dockerfile b/core/nodejs12Action/Dockerfile
index 8b3d8ef..3cf80c0 100644
--- a/core/nodejs12Action/Dockerfile
+++ b/core/nodejs12Action/Dockerfile
@@ -15,7 +15,7 @@
 # limitations under the License.
 #
 
-FROM node:12.16.2-stretch
+FROM node:12.18.0-stretch
 
 # Initial update and some basics.
 #
diff --git a/core/nodejs14Action/CHANGELOG.md b/core/nodejs14Action/CHANGELOG.md
index 7be169d..87e6419 100644
--- a/core/nodejs14Action/CHANGELOG.md
+++ b/core/nodejs14Action/CHANGELOG.md
@@ -23,5 +23,5 @@
 Changes:
   - Initial release
 
-Node.js version = [14.2.0](https://nodejs.org/en/blog/release/v14.2.0/)
+Node.js version = [14.4.0](https://nodejs.org/en/blog/release/v14.4.0/)
 OpenWhisk version = [OpenWhisk v3.21.2](https://www.npmjs.com/package/openwhisk)
diff --git a/core/nodejs14Action/Dockerfile b/core/nodejs14Action/Dockerfile
index c94a94a..2876bb0 100644
--- a/core/nodejs14Action/Dockerfile
+++ b/core/nodejs14Action/Dockerfile
@@ -15,7 +15,7 @@
 # limitations under the License.
 #
 
-FROM node:14.2.0-stretch
+FROM node:14.4.0-stretch
 
 # Initial update and some basics.
 #