ci: move migrate process to another branch

Author: std-microblock

.github/workflows/update-migrate-progress.yml

@@ -35,16 +35,11 @@ jobs:
       - name: Run update migration progress script
         run: npm run update-migrate-progress
 
-      - name: Check for changes
-        id: git-check
-        run: |
-          git diff --quiet CPPREF_MIGRATE_PROGRESS.md || echo "has_changes=true" >> $GITHUB_OUTPUT
-
-      - name: Commit and push if changes
-        if: steps.git-check.outputs.has_changes == 'true'
+      - name: Create orphan branch and force push
         run: |
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
+          git checkout --orphan migrate-progress
           git add CPPREF_MIGRATE_PROGRESS.md
           git commit -m "chore: update migration progress [skip ci]"
-          git push
+          git push --force origin migrate-progress