Bump golang to 1.18.6 (#885)

Co-authored-by: Manjunath A Kumatagi <[email protected]>

Author: k8s-infra-cherrypick-robot

Dockerfile

@@ -15,7 +15,7 @@
 # limitations under the License.
 
 # Build the manager binary
-FROM golang:1.18.5 as builder
+FROM golang:1.18.6 as builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests

hack/ccm/Dockerfile

@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-ARG GOLANG_IMAGE=golang:1.18.5
+ARG GOLANG_IMAGE=golang:1.18.6
 ARG TARGETPLATFORM=linux/amd64
 ARG ARCH=amd64