build(deps): bump actions/checkout from 2 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build-and-push-to-docker.yml

@@ -43,7 +43,7 @@ jobs:
         - docker/qgis/Dockerfile
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: hadolint/[email protected]
       with:
         dockerfile: ${{ matrix.DOCKERFILE_PATH }}
@@ -67,7 +67,7 @@ jobs:
         username: ${{ secrets.RENKU_DOCKER_USERNAME }}
         password: ${{ secrets.RENKU_DOCKER_PASSWORD }}
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up QEMU
       uses: docker/[email protected]
     - name: Set up Docker Buildx
@@ -131,7 +131,7 @@ jobs:
       with:
         username: ${{ secrets.RENKU_DOCKER_USERNAME }}
         password: ${{ secrets.RENKU_DOCKER_PASSWORD }}
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up QEMU
       uses: docker/[email protected]
     - name: Set up Docker Buildx
@@ -199,7 +199,7 @@ jobs:
       with:
         username: ${{ secrets.RENKU_DOCKER_USERNAME }}
         password: ${{ secrets.RENKU_DOCKER_PASSWORD }}
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up QEMU
       uses: docker/[email protected]
     - name: Set up Docker Buildx
@@ -273,7 +273,7 @@ jobs:
       with:
         username: ${{ secrets.RENKU_DOCKER_USERNAME }}
         password: ${{ secrets.RENKU_DOCKER_PASSWORD }}
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set outputs
       id: vars
       run: |
@@ -353,7 +353,7 @@ jobs:
         username: ${{ secrets.RENKU_DOCKER_USERNAME }}
         password: ${{ secrets.RENKU_DOCKER_PASSWORD }}
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set outputs
       id: vars
       run: |
@@ -402,7 +402,7 @@ jobs:
         password: ${{ secrets.RENKU_DOCKER_PASSWORD }}
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set outputs
       id: vars
       run: |
@@ -452,7 +452,7 @@ jobs:
         username: ${{ secrets.RENKU_DOCKER_USERNAME }}
         password: ${{ secrets.RENKU_DOCKER_PASSWORD }}
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up QEMU
       uses: docker/[email protected]
     - name: Set up Docker Buildx
@@ -559,7 +559,7 @@ jobs:
         username: ${{ secrets.RENKU_DOCKER_USERNAME }}
         password: ${{ secrets.RENKU_DOCKER_PASSWORD }}
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
     - name: Set outputs

.github/workflows/update-default-image-in-notebooks.yml

@@ -15,7 +15,7 @@ jobs:
       run: |
         echo "NEW_IMAGE=renku/renkulab-py:3.9-${{ env.NEW_VERSION }}" >> $GITHUB_ENV
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         repository: SwissDataScienceCenter/renku-notebooks
         ref: main