Merge pull request #8400 from rabbitmq/mergify/bp/v3.10.x/pr-8399

ca-certificates are needed for k8s peer plugin (backport #8396) (backport #8397) (backport #8399)

Author: michaelklishin

packaging/docker-image/BUILD.bazel

@@ -32,6 +32,7 @@ BUILD_DEPS_PACKAGES = [
 
 REQUIRED_PACKAGES = [
     "gosu",
+    "ca-certificates",
 ]
 
 CONVENIENCE_PACKAGES = [