bump pinned golang to 1.20.5 (#10127)

Author: longwuyuan

images/custom-error-pages/rootfs/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:1.20.4-alpine3.18 as builder
+FROM golang:1.20.5-alpine3.18 as builder
 
 RUN apk update \
     && apk upgrade && apk add git

images/ext-auth-example-authsvc/rootfs/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.20.4-alpine3.18 as builder
+FROM golang:1.20.5-alpine3.18 as builder
 RUN mkdir /authsvc
 WORKDIR /authsvc
 COPY . ./

images/fastcgi-helloserver/rootfs/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:1.20.4-alpine3.18 as builder
+FROM golang:1.20.5-alpine3.18 as builder
 
 WORKDIR /go/src/k8s.io/ingress-nginx/images/fastcgi
 

images/go-grpc-greeter-server/rootfs/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.20.4-alpine3.18 as build
+FROM golang:1.20.5-alpine3.18 as build
 
 WORKDIR /go/src/greeter-server
 

images/httpbun/rootfs/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:1.20 AS builder
+FROM golang:1.20.5 AS builder
 
 ENV LC_ALL=C.UTF-8
 ENV LANG=C.UTF-8

images/kube-webhook-certgen/rootfs/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM --platform=$BUILDPLATFORM golang:1.20.1 as builder
+FROM --platform=$BUILDPLATFORM golang:1.20.5 as builder
 ARG BUILDPLATFORM
 ARG TARGETARCH