feat: push branch (dry-run)

Author: tkajtoch

.github/workflows/update_dependencies_pr.yml

@@ -96,3 +96,5 @@ jobs:
         run: |
           git add package.json yarn.lock src/platform/packages/private/kbn-ui-shared-deps-npm/version_dependencies.txt
           git commit -m "chore: update dependencies"
+      - name: Push branch to forked repository
+        run: git push fork "${{ steps.git_branch.outputs.BRANCH_NAME }}" --dry-run