test: fix golint error

.github/workflows/static.yaml

@@ -7,12 +7,15 @@ jobs:
         name: Go Lint
         runs-on: ubuntu-latest
         steps:
-            - name: Checkout code
-              uses: actions/checkout@master
-            - name: Run linter
-              uses: golangci/golangci-lint-action@v2
+            - name: Set up Go 1.x
+              uses: actions/setup-go@v3
               with:
-                  version: v1.45
+                go-version: ^1.19
+            - uses: actions/checkout@master
+            - name: Run linter
+              uses: golangci/golangci-lint-action@v3
+              with:
+                  version: v1.51
                   args: -E=gofmt,deadcode,unused,varcheck,ineffassign,revive,misspell,exportloopref,asciicheck,bodyclose,contextcheck --timeout=30m0s
     verify-helm:
         name: Verify Helm

go.mod

@@ -1,6 +1,6 @@
 module github.com/kubernetes-csi/csi-driver-nfs
 
-go 1.18
+go 1.19
 
 require (
 	github.com/container-storage-interface/spec v1.5.0