chore(deps): bump peter-evans/create-pull-request from 5 to 6

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 5 to 6.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@v5...v6)

---
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-pot.yml

@@ -23,7 +23,7 @@ jobs:
       run: wp i18n make-pot . languages/pressbooks-saml-sso.pot --domain=pressbooks-saml-sso --slug=pressbooks-saml-sso --package-name="Pressbooks SAML2 Single Sign-On" --headers="{\"Report-Msgid-Bugs-To\":\"https://github.com/pressbooks/pressbooks-saml-sso/issues\"}"
     - name: Create Pull Request for POT file
       id: cprpot
-      uses: peter-evans/create-pull-request@v5
+      uses: peter-evans/create-pull-request@v6
       with:
         token: ${{ secrets.PAT_FOR_GITHUB_ACTIONS }}
         labels: automerge-pot

.github/workflows/update-translations.yml

@@ -26,7 +26,7 @@ jobs:
         run: wp i18n make-mo languages
       - name: Create Pull Request for MO files
         id: cprtransifex
-        uses: peter-evans/create-pull-request@v5
+        uses: peter-evans/create-pull-request@v6
         with:
           token: ${{ secrets.PAT_FOR_GITHUB_ACTIONS }}
           commit-message: 'chore(l10n): update languages/*.mo'