chore(deps): update grafana/shared-workflows/ action to

Signed-off-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>

Author: renovate-sh-app[bot]

.github/workflows/build.yml

@@ -29,7 +29,7 @@ jobs:
     permissions:
       contents: read
       id-token: write
-    uses: grafana/shared-workflows/.github/workflows/docker-build-push-multiarch.yml@4101b7ff332a47ef03b59a554624800a61668090 # main
+    uses: grafana/shared-workflows/.github/workflows/docker-build-push-multiarch.yml@c8ac4a279df46ebd1f85064119a0835098b88092 # main
     with:
       platforms: linux/amd64,linux/arm64
       tags: |