automate PR after changes to release branch

.github/workflows/latest-pytorch-support.yml

@@ -49,7 +49,7 @@ jobs:
           if [[ ${{ github.ref }} =~ .*main.* ]]; then
             echo "base_branch=main" >> $GITHUB_ENV
           elif [[ ${{ github.ref }} =~ .*release.* ]]; then
-            echo "base_branch=release/1.2.x" >> $GITHUB_ENV
+            echo "base_branch=release/1.3.x" >> $GITHUB_ENV
           fi
       - name: Create PR from branch
         uses: peter-evans/create-pull-request@v4

.github/workflows/merge-release-changes-to-main.yml

@@ -0,0 +1,50 @@
+on:
+  push:
+    branches:
+      - 'workflows/gh-action-merge-release-changes-into-main'
+      # replace with release/1.3.x after testing
+env:
+    starting_branch: ${{ github.ref }}
+    working_branch: workflows/merge-release-changes-to-main
+    # set base branch to main
+    base_branch: main
+permissions:
+    contents: write
+    issues: write
+    pull-requests: write
+
+jobs:
+    check_out:
+        runs-on: ubuntu-latest
+        if: ${{ github.repository }} == 'hemlholtz-analytics/heat'
+        steps:
+          # make sure that new branch is created from starting_branch
+            - name: Delete working branch if it already exists
+              run: git push --delete origin ${{ env.working_branch }} || true
+            - uses: actions/checkout@v4
+              with:
+                ref: '${{ env.starting_branch }}'
+            - name: Create working branch
+              run: |
+                git fetch origin main:main
+                git checkout -b ${{ env.working_branch }}
+                git checkout main -- heat/core/version.py
+                git config --global user.name 'ClaudiaComito'
+                git config --global user.email '[email protected]@users.noreply.github.com'
+                git add heat/core/version.py
+                git commit -m "Update version.py from main branch"
+            - name: Commit and push working branch
+              run: |
+                git config --global user.name 'ClaudiaComito'
+                git config --global user.email '[email protected]@users.noreply.github.com'
+                git push -u origin ${{ env.working_branch }}
+            - name: Create a pull request
+              uses: peter-evans/create-pull-request@v5
+              with:
+                delete-branch: true
+                token: ${{ secrets.GITHUB_TOKEN }}
+                commit-message: 'Merge  release branch changes to main'
+                title: 'Merge ${{ env.starting_branch }} changes to ${{ env.base_branch }}'
+                body: 'This PR merges changes from release branch to main branch'
+                branch: '${{ env.working_branch }}'
+                base: '${{ env.base_branch }}'

.github/workflows/pytorch-latest-release.yml

@@ -3,7 +3,7 @@ on:
   workflow_dispatch:
 env:
   working_branch: support/new-pytorch-release-branch
-  base_branch: release/1.2.x
+  base_branch: release/1.3.x
 permissions:
   contents: write
 jobs: