Merge pull request #6442 from kubernetes/dependabot/docker/vertical-pod-autoscaler/pkg/updater/golang-1.21.6

Bump golang from 1.21.5 to 1.21.6 in /vertical-pod-autoscaler/pkg/updater

Author: k8s-ci-robot

vertical-pod-autoscaler/pkg/updater/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM --platform=$BUILDPLATFORM golang:1.21.5 as builder
+FROM --platform=$BUILDPLATFORM golang:1.21.6 as builder
 
 ENV GOPATH /gopath/
 ENV PATH $GOPATH/bin:$PATH