Merge pull request #1404 from kubernetes-sigs/tyuchn-patch-2

Bump go version to 1.20.8 in release-1.8

Author: mattcary

Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM --platform=$BUILDPLATFORM golang:1.19.12 as builder
+FROM --platform=$BUILDPLATFORM golang:1.20.8 as builder
 
 ARG STAGINGVERSION
 ARG TARGETPLATFORM