Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/docgen.yml

@@ -19,7 +19,7 @@ jobs:
     if: ${{ github.actor != 'dependabot[bot]' }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: ${{ github.head_ref }}
 

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
   goreleaser:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           # Allow goreleaser to access older tag information.
           fetch-depth: 0

.github/workflows/test.yml

@@ -27,7 +27,7 @@ jobs:
       - uses: actions/setup-go@v4
         with:
           go-version: ${{ env.GO_VERSION }}
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: go mod download
       - run: go build -v .
 
@@ -53,7 +53,7 @@ jobs:
         with:
           terraform_version: ${{ matrix.terraform }}
           terraform_wrapper: false
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: go mod download
       - env:
           TF_ACC: "1"