chore(deps): update grafana/shared-workflows/dockerhub-login action to v1.0.3 (#404)

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

Author: renovate-sh-app[bot]

.github/workflows/tooling-release.yml

@@ -159,7 +159,7 @@ jobs:
 
       - name: Login to Docker Hub
         if: ${{ needs.config.outputs.docker-io == 'true' }}
-        uses: grafana/shared-workflows/actions/dockerhub-login@c6d954f7cd9c0022018982e01268de6cb75b913c # dockerhub-login/v1.0.2
+        uses: grafana/shared-workflows/actions/dockerhub-login@081a366728379fd0426b9cfef190e9a21c2d5418 # dockerhub-login/v1.0.3
 
       - name: Login to GitHub Packages
         if: ${{ needs.config.outputs.ghcr-io == 'true' }}