fix: release pr workflow

Author: Niraj-Kamdar

.github/workflows/release-pr.yaml

@@ -136,9 +136,9 @@ jobs:
           committer: GitHub <noreply@github.com>
           author: ${{env.BUILD_BOT}} <${{env.BUILD_BOT}}@users.noreply.github.com>
           commit-message: "${{env.RELEASE_VERSION}}"
-          title: 'polywrap-msgpack (${{env.RELEASE_VERSION}})'
+          title: 'Python client (${{env.RELEASE_VERSION}})'
           body: |
-            ## polywrap-msgpack (${{env.RELEASE_VERSION}})
+            ## Python client (${{env.RELEASE_VERSION}})
 
             ### Breaking Changes