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>

Author: dependabot[bot]

.github/workflows/update_grammar.yml

@@ -35,7 +35,7 @@ jobs:
             - name: Install package
               run: pip install .
             - name: Create Pull Request
-              uses: peter-evans/create-pull-request@v6
+              uses: peter-evans/create-pull-request@v7
               with:
                 delete-branch: true
                 title: "Autoupdate grammar targets based on antlr/grammars-v4's TSQL grammar definition"