Bump frequenz-floss/dependabot-auto-approve in the compatible group

Bumps the compatible group with 1 update: [frequenz-floss/dependabot-auto-approve](https://github.com/frequenz-floss/dependabot-auto-approve).


Updates `frequenz-floss/dependabot-auto-approve` from 1.4.0 to 1.5.0
- [Release notes](https://github.com/frequenz-floss/dependabot-auto-approve/releases)
- [Commits](frequenz-floss/dependabot-auto-approve@a115bc7...e943399)

---
updated-dependencies:
- dependency-name: frequenz-floss/dependabot-auto-approve
  dependency-version: 1.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: compatible
...

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

Author: dependabot[bot]

.github/workflows/auto-dependabot.yaml

@@ -29,7 +29,7 @@ jobs:
           private-key: ${{ secrets.FREQUENZ_AUTO_DEPENDABOT_APP_PRIVATE_KEY }}
 
       - name: Auto-merge Dependabot PR
-        uses: frequenz-floss/dependabot-auto-approve@a115bc7e0194c08f876493f311ec6f4de53f984e # v1.4.0
+        uses: frequenz-floss/dependabot-auto-approve@e943399cc9d76fbb6d7faae446cd57301d110165 # v1.5.0
         with:
           github-token: ${{ steps.app-token.outputs.token }}
           dependency-type: 'all'