bump actions/checkout from 2 to 4

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/lint.yml

@@ -13,7 +13,7 @@ jobs:
         with:
           go-version: 1.18
           stable: false
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v6
         with:

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
     if: github.triggering_actor == 'samber'
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up Go
       uses: actions/setup-go@v5

.github/workflows/test.yml

@@ -20,7 +20,7 @@ jobs:
           - '1.22'
           - '1.x'
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up Go
       uses: actions/setup-go@v5