CI: Ensure that build-id is treated as a string in `release-build.yml` (#107213)

Ensure that build-id is treated as a string

.github/workflows/release-build.yml

@@ -69,11 +69,6 @@ jobs:
       id-token: write
     name: Dispatch grafana-enterprise build
     steps:
-      - name: Log in to GCS
-        id: login-to-gcs
-        uses: grafana/shared-workflows/actions/login-to-gcs@login-to-gcs/v0.2.1
-        with:
-          environment: prod
       - id: vault-secrets
         uses: grafana/shared-workflows/actions/get-vault-secrets@main
         with:
@@ -92,7 +87,7 @@ jobs:
           REF: ${{ github.ref_name }}
           VERSION: ${{ needs.setup.outputs.version }}
           BUILD_ID: ${{ github.run_number }}
-          BUCKET: ${{ steps.login-to-gcs.outputs.bucket }}
+          BUCKET: grafana-prerelease
         with:
           script: |
             const {REF, VERSION, BUILD_ID, BUCKET} = process.env;
@@ -104,7 +99,7 @@ jobs:
                 ref:  REF,
                 inputs: {
                   "version": VERSION,
-                  "build-id": BUILD_ID,
+                  "build-id": String(BUILD_ID),
                   "bucket": BUCKET,
                 }
             })