build: downgrade maven-release-plugin to 2.5.3

maven-release-plugin 3.3.1 (released May 2026) breaks the GitHub release
flow with "preparation step was stopped mid-way". The root cause is an SCM
API incompatibility: the pom.xml pins maven-scm-provider-gitexe:1.9.5 (SCM
1.x), while plugin 3.x requires the SCM 2.x API internally. Reverting to
2.5.3, which was the last known-good version and is compatible with the
pinned scm-provider-gitexe 1.9.5.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: nikagra

pom.xml

@@ -618,7 +618,7 @@
         </plugin>
         <plugin>
           <artifactId>maven-release-plugin</artifactId>
-          <version>3.3.1</version>
+          <version>2.5.3</version>
         </plugin>
         <plugin>
           <artifactId>maven-install-plugin</artifactId>