Bump actions/checkout from 3 to 4 (#31)

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>

.github/workflows/helm.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Configure Git

.github/workflows/rust.yml

@@ -6,15 +6,15 @@ jobs:
   fossa-scan:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: fossas/fossa-action@main # Use a specific version if locking is preferred
         with:
           api-key: ${{secrets.FOSSA_API_KEY}}
   test:
     name: Build, test (x86)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
@@ -41,7 +41,7 @@ jobs:
     needs: test
     if: github.ref == 'refs/heads/master'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Log in to the Container registry
         uses: docker/login-action@v3
         with: