update go version to 1.20.9

dannawang0221 · dannawang0221 · commit 294f34dde299 · 2023-10-13T23:15:13.000Z
diff --git a/Dockerfile b/Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM --platform=$BUILDPLATFORM golang:1.20.8 as builder
+FROM --platform=$BUILDPLATFORM golang:1.20.9 as builder
 
 ARG STAGINGVERSION
 ARG TARGETPLATFORM
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module sigs.k8s.io/gcp-compute-persistent-disk-csi-driver
 
-go 1.20.9
+go 1.20
 
 require (
 	cloud.google.com/go/compute/metadata v0.2.3
