ci: update GitHub Actions workflows to latest action versions

- Update actions/checkout to version 6 in workflow files
- Upgrade golangci-lint-action to version 9
- Bump actions/cache to version 5

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

Author: appleboy

.github/workflows/go.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.ref }}
       - name: Setup go
@@ -31,7 +31,7 @@ jobs:
           go-version-file: "go.mod"
           check-latest: true
       - name: Setup golangci-lint
-        uses: golangci/golangci-lint-action@v8
+        uses: golangci/golangci-lint-action@v9
         with:
           version: v2.1
           args: --verbose
@@ -61,11 +61,11 @@ jobs:
           go-version: ${{ matrix.go }}
 
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.ref }}
 
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         with:
           path: |
             ${{ matrix.go-build }}

.github/workflows/goreleaser.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Set up Go