chore(deps): Bump peter-evans/create-pull-request from 6.1.0 to 8.1.0 (#340)

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 6.1.0 to 8.1.0.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@c5a7806...c0f553f)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-version: 8.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/scheduled.yml

@@ -43,7 +43,7 @@ jobs:
 
       - name: Create pull request
         if: steps.calibre.outputs.markdown != ''
-        uses: peter-evans/create-pull-request@c5a7806660adbe173f04e3e038b0ccdcd758773c # v6
+        uses: peter-evans/create-pull-request@c0f553fe549906ede9cf27b5156039d195d2ece0 # v8.1.0
         with:
           title: "clean: Compress images"
           branch-suffix: timestamp