Pin Golang version to v1.26.6 for release-1.9

Signed-off-by: Xun Jiang <[email protected]>

.github/workflows/pr.yaml

@@ -10,7 +10,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: '1.21'
+        go-version: '1.21.6'
       id: go
 
     - name: Check out the code

.github/workflows/push.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: '1.21'
+        go-version: '1.21.6'
       id: go
 
     - name: Check out code into the Go module directory

Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM --platform=$BUILDPLATFORM golang:1.21-bookworm AS build
+FROM --platform=$BUILDPLATFORM golang:1.21.6-bookworm AS build
 
 ARG TARGETOS
 ARG TARGETARCH

go.mod

@@ -2,7 +2,7 @@ module github.com/vmware-tanzu/velero-plugin-for-gcp
 
 go 1.21
 
-toolchain go1.21.3
+toolchain go1.21.6
 
 require (
 	cloud.google.com/go/storage v1.33.0