Chore: Migrate workflows to use create-github-app-token (#2142)

- Removes dependabot.yml as renovate will update grafana-sdk for us
- Migrates to `create-github-app-token`
- Pin workflows
- Removes is-compatible.yml I found that workflow not helping much but
creating an annoyingly long comment

Fixes https://github.com/grafana/oss-big-tent-squad/issues/144

.github/workflows/publish.yaml

@@ -27,12 +27,12 @@ on:
 jobs:
   cd:
     name: CD
-    uses: grafana/plugin-ci-workflows/.github/workflows/cd.yml@main
+    uses: grafana/plugin-ci-workflows/.github/workflows/cd.yml@ci-cd-workflows/v4.3.0
     with:
-      go-version: '1.25'
-      golangci-lint-version: '2.4.0'
+      golangci-lint-version: '2.7.2'
+      go-version: '1.25.5'
       branch: ${{ github.event.inputs.branch }}
       environment: ${{ github.event.inputs.environment }}
       docs-only: ${{ fromJSON(github.event.inputs.docs-only) }}
-      github-draft-release: false
       run-playwright: true
+      github-draft-release: false