Preparing hbase release 2.5.3RC2; tagging and updates to CHANGES.md and RELEASENOTES.md

Signed-off-by: Tak Lon (Stephen) Wu <taklwu@apache.org>
diff --git a/CHANGES.md b/CHANGES.md
index f036d3d..3423b44 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -18,7 +18,7 @@
 -->
 # HBASE Changelog
 
-## Release 2.5.3 - Unreleased (as of 2023-01-29)
+## Release 2.5.3 - Unreleased (as of 2023-02-01)
 
 
 
@@ -68,7 +68,6 @@
 | [HBASE-27589](https://issues.apache.org/jira/browse/HBASE-27589) | Rename TestConnectionImplementation in hbase-it to fix javadoc failure |  Blocker | Client, documentation |
 | [HBASE-27592](https://issues.apache.org/jira/browse/HBASE-27592) | Update hadoop netty version for hadoop-2.0 profile |  Major | . |
 | [HBASE-27586](https://issues.apache.org/jira/browse/HBASE-27586) | Bump up commons-codec to 1.15 |  Major | dependencies, security |
-| [HBASE-27585](https://issues.apache.org/jira/browse/HBASE-27585) | Bump up jruby to 9.3.9.0 and related joni and jcodings to 2.1.43 and 1.0.57 respectively |  Major | jruby, security |
 | [HBASE-27547](https://issues.apache.org/jira/browse/HBASE-27547) | Close store file readers after region warmup |  Major | regionserver |
 | [HBASE-26967](https://issues.apache.org/jira/browse/HBASE-26967) | FilterList with FuzzyRowFilter and SingleColumnValueFilter evaluated with operator MUST\_PASS\_ONE doesn't work as expected |  Critical | Filters |
 
@@ -80,6 +79,7 @@
 | [HBASE-27557](https://issues.apache.org/jira/browse/HBASE-27557) | [JDK17] Update shade plugin version |  Minor | . |
 | [HBASE-25516](https://issues.apache.org/jira/browse/HBASE-25516) | [JDK17] reflective access Field.class.getDeclaredField("modifiers") not supported |  Major | Filesystem Integration |
 | [HBASE-27591](https://issues.apache.org/jira/browse/HBASE-27591) | [JDK17] Fix failure TestImmutableScan#testScanCopyConstructor |  Minor | . |
+| [HBASE-27581](https://issues.apache.org/jira/browse/HBASE-27581) | [JDK17] Fix failure TestHBaseTestingUtil#testResolvePortConflict |  Minor | test |
 
 
 ### OTHER:
diff --git a/pom.xml b/pom.xml
index fb3a09a..d957030 100644
--- a/pom.xml
+++ b/pom.xml
@@ -521,7 +521,7 @@
     </site>
   </distributionManagement>
   <properties>
-    <revision>2.5.4-SNAPSHOT</revision>
+    <revision>2.5.3</revision>
     <!-- override on command line to have generated LICENSE files include
          diagnostic info for verifying notice requirements -->
     <license.debug.print.included>false</license.debug.print.included>