chore(deps): 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/update-nixpkgs.yml

@@ -16,7 +16,7 @@ jobs:
     - name: Update snapshot commit
       run: 'nix flake update nixpkgs'
     - name: Create Pull Request
-      uses: peter-evans/create-pull-request@v6
+      uses: peter-evans/create-pull-request@v7
       with:
         title: 'Update nixpkgs snapshot'
         body: ''

.github/workflows/update-snapshot.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Update HEAD snapshot commit
       run: 'nix flake update emacs-snapshot'
     - name: Create Pull Request
-      uses: peter-evans/create-pull-request@v6
+      uses: peter-evans/create-pull-request@v7
       with:
         title: 'Update emacs snapshots'
         body: ''