Bump peter-evans/create-pull-request from 6 to 7

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 6 to 7.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@v6...v7)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/run_autogen.yml

@@ -51,7 +51,7 @@ jobs:
         run: echo "::set-output name=git-diff::$(git diff --quiet HEAD~0 || echo true)"
 
       - name: pull-request
-        uses: peter-evans/create-pull-request@v6
+        uses: peter-evans/create-pull-request@v7
         if: ${{ steps.git-diff.outputs.git-diff == 'true' }}
         with:
           commit-message: Update to latest Vulkan-Headers