bump golangci-lint ver

Signed-off-by: Zeyuan Cao <[email protected]>

Author: zywillc

.github/workflows/ci-tests.yaml

@@ -57,7 +57,7 @@ jobs:
       - name: Run golangci-lint
         uses: golangci/golangci-lint-action@v2
         with:
-          version: v1.46.2
+          version: v1.52.2
           args: --timeout 5m
   test:
     name: Ensure unit tests are passing

.golangci.yml

@@ -7,15 +7,13 @@ run:
 linters:
   enable:
     - vet
-    - deadcode
+    - unused
     - goimports
-    - varcheck
-    - structcheck
     - ineffassign
     - unconvert
     - unparam
 linters-settings:
   goimports:
     local-prefixes: github.com/argoproj-labs/argocd-image-updater
 service:
-  golangci-lint-version: 1.26.0
+  golangci-lint-version: 1.52.2