chore(deps): bump actions/checkout from 3 to 4 (#81)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -46,7 +46,7 @@ jobs:
 
       - name: Checkout code
         if: ${{ steps.release.outputs.is_release }}
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: main
 

.github/workflows/validate.yml

@@ -18,7 +18,7 @@ jobs:
       image: hashicorp/terraform:${{ matrix.terraform }}
     steps:
       - name: "Checkout"
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: terraform init
         run: terraform init -get -backend=false -input=false
       - if: contains(matrix.terraform, '1.1.')
@@ -45,7 +45,7 @@ jobs:
     container:
       image: hashicorp/terraform:${{ matrix.terraform }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: terraform init
         run: terraform init -get -backend=false -input=false
       - if: contains(matrix.terraform, '1.1.')