chore(deps): update actions/checkout action to v4

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/ci.yaml

@@ -14,7 +14,7 @@ jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
       - name: Log in to GHCR

.github/workflows/test.yaml

@@ -17,7 +17,7 @@ jobs:
     name: Build and Test
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     # Docker testing
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v2
@@ -34,7 +34,7 @@ jobs:
         sed -i "s#ghcr.io/usa-reddragon/kiri:__KIRI_VERSION__#ghcr.io/usa-reddragon/kiri:${{ github.sha }}#g" action.yml
     # Action testing
     - name: Clone SnekSafe for testing
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: USA-RedDragon/SnekSafe
         path: SnekSafe

action.yml

@@ -115,7 +115,7 @@ runs:
       path: ${{ steps.kiri-output.outputs.output-dir }}
   - name: Checkout gh-pages branch
     if: github.event_name == 'pull_request'
-    uses: actions/checkout@v3
+    uses: actions/checkout@v4
     with:
       ref: gh-pages
       fetch-depth: 0