PARQUET-1714: Update CHANGES.md & update dev scm

Updated the SCM developer connection to the 'git@' format so no
username/password authentication is required for creating a release
diff --git a/CHANGES.md b/CHANGES.md
index 3964c11..2aee03e 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -19,6 +19,22 @@
 
 # Parquet #
 
+### Version 2.8.0 ###
+
+#### New Feature
+
+*   [PARQUET-1622](https://issues.apache.org/jira/browse/PARQUET-1622) - Add BYTE\_STREAM\_SPLIT encoding
+
+#### Improvement
+
+*   [PARQUET-1672](https://issues.apache.org/jira/browse/PARQUET-1672) - \[DOC\] Broken link to "How To Contribute" section in Parquet-MR project
+*   [PARQUET-1708](https://issues.apache.org/jira/browse/PARQUET-1708) - Fix Thrift compiler warning
+
+#### Task
+
+*   [PARQUET-1687](https://issues.apache.org/jira/browse/PARQUET-1687) - Update release process
+*   [PARQUET-1714](https://issues.apache.org/jira/browse/PARQUET-1714) - Release parquet format 2.8.0
+
 ### Version 2.7.0 ###
 
 #### Sub-task
diff --git a/pom.xml b/pom.xml
index 81a6ecc..e81c049 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,7 +38,7 @@
   <scm>
     <connection>scm:git:git@github.com:apache/parquet-format.git</connection>
     <url>scm:git:git@github.com:apache/parquet-format.git</url>
-    <developerConnection>scm:git:https://github.com/apache/parquet-format.git</developerConnection>
+    <developerConnection>scm:git:git@github.com:apache/parquet-format.git</developerConnection>
     <tag>HEAD</tag>
   </scm>