build(deps): bump peter-evans/create-pull-request from 8.1.0 to 8.1.1

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 8.1.0 to 8.1.1.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](c0f553fe54...5f6978faf0)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-version: 8.1.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/update-colorschemes.yml

@@ -79,7 +79,7 @@ jobs:
         run: nix build .#ghostty
 
       - name: Create pull request
-        uses: peter-evans/create-pull-request@c0f553fe549906ede9cf27b5156039d195d2ece0 # v8.1.0
+        uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1 # v8.1.1
         with:
           title: Update iTerm2 colorschemes
           base: main