fix: switch to test-containers from grafana/e2e for API server tests (#113256)

pkg/build/go.mod

@@ -5,7 +5,7 @@ go 1.25.3
 // Override docker/docker to avoid:
 // go: github.com/drone-runners/drone-runner-docker@v1.8.2 requires
 // github.com/docker/docker@v0.0.0-00010101000000-000000000000: invalid version: unknown revision 000000000000
-replace github.com/docker/docker => github.com/moby/moby v27.5.1+incompatible
+replace github.com/docker/docker => github.com/moby/moby v28.0.1+incompatible
 
 require (
 	github.com/google/uuid v1.6.0 // indirect; @grafana/grafana-backend-group

pkg/extensions/enterprise_imports.go

@@ -58,4 +58,5 @@ import (
 
 	_ "github.com/grafana/grafana/apps/alerting/alertenrichment/pkg/apis/alertenrichment/v1beta1"
 	_ "github.com/grafana/grafana/apps/scope/pkg/apis/scope/v0alpha1"
+	_ "github.com/testcontainers/testcontainers-go"
 )