ci: update Go version and improve lint workflow

- Add repository checkout step to lint workflow
- Update Go version in lint workflow to use `go.mod` file and check latest version
- Change container image in lint workflow from `golang:1.21-alpine` to `golang:1.22-alpine`
- Update Go version in `go.mod` from `1.18` to `1.22`

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.github/workflows/lint.yml

@@ -8,12 +8,15 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
       - name: Setup go
         uses: actions/setup-go@v5
         with:
-          go-version: "^1"
-      - name: Checkout repository
-        uses: actions/checkout@v4
+          go-version-file: go.mod
+          check-latest: true
+
       - name: Setup golangci-lint
         uses: golangci/golangci-lint-action@v6
         with:
@@ -27,7 +30,7 @@ jobs:
 
   testing:
     runs-on: ubuntu-latest
-    container: golang:1.21-alpine
+    container: golang:1.22-alpine
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4