SONARJAVA-6185 Prepare Next Iteration: adjust for automated release (#5506)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: tomasz-tylenda-sonarsource

.github/workflows/PrepareNextIteration.yml

@@ -20,36 +20,35 @@ jobs:
       pull-requests: write
       contents: write
 
-    env:
-      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      NEXT_VERSION: "${{ inputs.version }}-SNAPSHOT"
-
     steps:
 
       - name: Checkout Sources
         uses: actions/checkout@v4
 
+      - name: Normalize Version
+        id: version
+        env:
+          VERSION: ${{ inputs.version }}
+        run: |
+          if [[ "$VERSION" =~ ^[0-9]+\.[0-9]+$ ]]; then
+            VERSION="${VERSION}.0"
+          fi
+          echo "full-version=${VERSION}-SNAPSHOT" >> $GITHUB_OUTPUT
+
       - name: Update Version Number
         run: |
-          git config user.name "${GITHUB_ACTOR}"
-          git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
-          git config --global core.autocrlf input
-          git config --global core.safecrlf true
-          BRANCH="gh-action/next-iteration.${{ github.run_id }}"
-          git checkout -b "${BRANCH}"
-          mvn versions:set -DgenerateBackupPoms=false -DnewVersion="${NEXT_VERSION}"
-          git commit -m 'Prepare next development iteration' -a
-          git push --set-upstream origin "${BRANCH}"
-          echo "branch=${BRANCH}" >> $GITHUB_OUTPUT
+          mvn versions:set -DgenerateBackupPoms=false -DnewVersion="${{ steps.version.outputs.full-version }}"
 
       - name: Create Pull Request
+        uses: SonarSource/release-github-actions/create-pull-request@v1
         id: create-pr
-        run: |
-          URL=$(gh pr create --draft --base master --title "Prepare next development iteration ${NEXT_VERSION}" --body '')
-          echo "url=${URL}" >> $GITHUB_OUTPUT
+        with:
+          commit-message: "Prepare next development iteration ${{ steps.version.outputs.full-version }}"
+          title: "Prepare next development iteration ${{ steps.version.outputs.full-version }}"
+          branch: gh-action/next-iteration
+          branch-suffix: timestamp
 
       - name: Summary
         run: |
-          echo "Generated ${{steps.create-pr.outputs.url}}." >> $GITHUB_STEP_SUMMARY
-          echo "New version set to ${NEXT_VERSION}." >> $GITHUB_STEP_SUMMARY
-          echo "Tip: close and reopen the PR to trigger CI. " >> $GITHUB_STEP_SUMMARY
+          echo "Generated ${{steps.create-pr.outputs.pull-request-url}}." >> $GITHUB_STEP_SUMMARY
+          echo "New version set to ${{ steps.version.outputs.full-version }}." >> $GITHUB_STEP_SUMMARY