Chore: Update build-container to version 1.5.7 (#51188)

scripts/drone/steps/lib.star

@@ -1,7 +1,7 @@
 load('scripts/drone/vault.star', 'from_secret', 'github_token', 'pull_secret', 'drone_token', 'prerelease_bucket')
 
 grabpl_version = 'v2.9.50'
-build_image = 'grafana/build-container:1.5.5'
+build_image = 'grafana/build-container:1.5.7'
 publish_image = 'grafana/grafana-ci-deploy:1.3.1'
 deploy_docker_image = 'us.gcr.io/kubernetes-dev/drone/plugins/deploy-image'
 alpine_image = 'alpine:3.15'