Create PR for changelog instead of direct commit

.github/workflows/ci.yml

@@ -305,6 +305,10 @@ jobs:
 
   publish-release:
     runs-on: ubuntu-20.04
+    outputs:
+      prerelease: ${{ steps.get_version.outputs.prerelease }}
+      changelog: ${{ steps.create-release.outputs.body }}
+      version: ${{ steps.get_version.outputs.version }}
     needs:
       - build-release
     if: github.ref_type == 'tag' && (startsWith(github.ref_name, 'v') || contains(github.ref_name, '-beta.rc'))
@@ -348,6 +352,13 @@ jobs:
           asset_path: ./paperless-ngx.tar.xz
           asset_name: paperless-ngx-${{ steps.get_version.outputs.version }}.tar.xz
           asset_content_type: application/x-xz
+
+  append-changelog:
+    runs-on: ubuntu-20.04
+    needs:
+      - publish-release
+    if: needs.publish-release.outputs.prerelease == 'false'
+    steps:
       -
         name: Checkout
         uses: actions/checkout@v3
@@ -358,11 +369,33 @@ jobs:
         id: append-Changelog
         working-directory: docs
         run: |
-          echo -e "# Changelog\n\n${{ steps.create-release.outputs.body }}\n" > changelog-new.md
+          git branch ${{ needs.publish-release.outputs.version }}-changelog
+          git checkout ${{ needs.publish-release.outputs.version }}-changelog
+          echo -e "# Changelog\n\n${{ needs.publish-release.outputs.changelog }}\n" > changelog-new.md
           CURRENT_CHANGELOG=`tail --lines +2 changelog.md`
           echo -e "$CURRENT_CHANGELOG" >> changelog-new.md
           mv changelog-new.md changelog.md
           git config --global user.name "github-actions"
           git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git commit -am "Changelog ${{ steps.get_version.outputs.version }} - GHA"
-          git push origin HEAD:main
+          git push origin ${{ needs.publish-release.outputs.version }}-changelog
+      -
+        name: Create Pull Request
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const { repo, owner } = context.repo;
+            const result = await github.rest.pulls.create({
+              title: '[Documentation] Add ${{ needs.publish-release.outputs.version }} changelog',
+              owner,
+              repo,
+              head: '${{ needs.publish-release.outputs.version }}-changelog',
+              base: 'main',
+              body: 'This PR is auto-generated by CI.'
+            });
+            github.rest.issues.addLabels({
+              owner,
+              repo,
+              issue_number: result.data.number,
+              labels: ['documentation']
+            });