chore: Bump actions/checkout from 4 to 5 (#359)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  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/alpha.yaml

@@ -10,7 +10,7 @@ jobs:
   release:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: '1.24'

.github/workflows/release.yaml

@@ -10,7 +10,7 @@ jobs:
   release:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: '1.24'

.github/workflows/scheduled-scan.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Run Grype filesystem vulnerability scanner
         id: scan
         uses: ./.github/actions/scan-filesystem
@@ -31,7 +31,7 @@ jobs:
       actions: read
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Build image
         run: make docker-image DOCKER_IMAGE=ekco:nightly
       - name: Run Grype image vulnerability scanner

.github/workflows/test.yaml

@@ -7,7 +7,7 @@ jobs:
   test:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: '1.24'
@@ -16,6 +16,6 @@ jobs:
   build-image:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: make docker-image DOCKER_IMAGE=ttl.sh/replicated/ekco:$GITHUB_SHA VERSION=$GITHUB_REF_NAME
       - run: docker push ttl.sh/replicated/ekco:$GITHUB_SHA