SONARJAVA-6077 Update "Prepare Next Development Iteration" workflow (#5422)

Author: tomasz-tylenda-sonarsource

.github/workflows/PrepareNextIteration.yml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
     inputs:
       nextVersion:
-        description: Version number of the next iteration
+        description: Version number of the next iteration (e.g. 8.4-SNAPSHOT)
         required: true
 
 jobs:
@@ -15,20 +15,36 @@ jobs:
       pull-requests: write
       contents: write
 
+    env:
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      NEXT_VERSION: ${{ inputs.nextVersion }}
+
     steps:
 
       - name: Checkout Sources
         uses: actions/checkout@v4
 
       - name: Update Version Number
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          NEXT_VERSION: ${{ inputs.nextVersion }}
         run: |
           git config user.name "${GITHUB_ACTOR}"
           git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
-          git checkout -b gh-action/next-iteration
+          git config --global core.autocrlf input
+          git config --global core.safecrlf true
+          BRANCH="gh-action/next-iteration.${{ 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 gh-action/next-iteration
-          gh pr create -B master --title 'Prepare next development iteration' --body ''
+          git push --set-upstream origin "${BRANCH}"
+          echo "branch=${BRANCH}" >> $GITHUB_OUTPUT
+
+      - name: Create Pull Request
+        id: create-pr
+        run: |
+          URL=$(gh pr create --draft --base master --title "Prepare next development iteration ${NEXT_VERSION}" --body '')
+          echo "url=${URL}" >> $GITHUB_OUTPUT
+
+      - 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