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/create_release_pr.yaml

@@ -51,7 +51,7 @@ jobs:
       # See: https://github.com/peter-evans/create-pull-request/tree/master#reference-example
       - name: create PR
         id: create_pull_request
-        uses: peter-evans/create-pull-request@v6
+        uses: peter-evans/create-pull-request@v7
         with:
           # See: https://github.com/peter-evans/create-pull-request/blob/master/docs/concepts-guidelines.md#triggering-further-workflow-runs
           # See: https://github.com/peter-evans/create-pull-request/issues/48#issuecomment-537478081

.github/workflows/dart_deps.yaml

@@ -24,7 +24,7 @@ jobs:
       # See: https://github.com/peter-evans/create-pull-request/tree/master#reference-example
       - name: create PR
         id: create_pull_request
-        uses: peter-evans/create-pull-request@v6
+        uses: peter-evans/create-pull-request@v7
         with:
           token: ${{ secrets.PAT }} # See: https://github.com/peter-evans/create-pull-request/blob/master/docs/concepts-guidelines.md#triggering-further-workflow-runs
           # See: https://github.com/peter-evans/create-pull-request/issues/593