build(deps): bump dagger/dagger-for-github from 6.7.0 to 6.8.0 (#1164)

Bumps [dagger/dagger-for-github](https://github.com/dagger/dagger-for-github) from 6.7.0 to 6.8.0.
- [Release notes](https://github.com/dagger/dagger-for-github/releases)
- [Commits](dagger/dagger-for-github@a419ddb...e49f5bf)

---
updated-dependencies:
- dependency-name: dagger/dagger-for-github
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Dimitris Sotirakis <dimitrios.sotirakis@grafana.com>

.github/workflows/acceptance-tests.yml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       - name: Call Dagger Function
         id: dagger
-        uses: dagger/dagger-for-github@a419ddbf5ee9800810f7e029de674fbe0ce855aa # v6.7.0
+        uses: dagger/dagger-for-github@e49f5bfe7f9a3593f38b9d7391f110d6dff48f94 # v6.8.0
         with:
           version: "0.12.7"
           verb: call