build(deps): bump the compatible group with 2 updates

Bumps the compatible group with 2 updates: [actions/create-github-app-token](https://github.com/actions/create-github-app-token) and [frequenz-floss/gh-action-dependabot-migrate](https://github.com/frequenz-floss/gh-action-dependabot-migrate).


Updates `actions/create-github-app-token` from 3.1.1 to 3.2.0
- [Release notes](https://github.com/actions/create-github-app-token/releases)
- [Changelog](https://github.com/actions/create-github-app-token/blob/main/CHANGELOG.md)
- [Commits](actions/create-github-app-token@v3.1.1...bcd2ba4)

Updates `frequenz-floss/gh-action-dependabot-migrate` from 1.2.0 to 1.2.1
- [Release notes](https://github.com/frequenz-floss/gh-action-dependabot-migrate/releases)
- [Commits](frequenz-floss/gh-action-dependabot-migrate@v1.2.0...eb100d3)

---
updated-dependencies:
- dependency-name: actions/create-github-app-token
  dependency-version: 3.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: compatible
- dependency-name: frequenz-floss/gh-action-dependabot-migrate
  dependency-version: 1.2.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: compatible
...

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

Author: dependabot[bot]

.github/workflows/isort-migration.yaml

@@ -58,7 +58,7 @@ jobs:
     steps:
       - name: Generate token
         id: create-app-token
-        uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3 # v3.1.1
+        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
         with:
           app-id: ${{ secrets.FREQUENZ_AUTO_DEPENDABOT_APP_ID }}
           private-key: ${{ secrets.FREQUENZ_AUTO_DEPENDABOT_APP_PRIVATE_KEY }}
@@ -69,7 +69,7 @@ jobs:
           # Read/update pull request metadata and labels.
           permission-pull-requests: write
       - name: Migrate
-        uses: frequenz-floss/gh-action-dependabot-migrate@27763fb5eb56476d91abe00132e8a0614171f92f # v1.2.0
+        uses: frequenz-floss/gh-action-dependabot-migrate@eb100d3cf732b4808a7776eee8f303521efd494b # v1.2.1
         with:
           migration-script: |
             import os