chore(deps): bump actions/checkout from 1 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 1 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v1...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/gitlab-mirror.yml

@@ -5,8 +5,8 @@ on: [push, delete]
 jobs:
   to_gitlab:
     runs-on: ubuntu-latest
-    steps: # <-- must use actions/checkout@v1 before mirroring!
-      - uses: actions/checkout@v1
+    steps: # <-- must use actions/checkout@v4 before mirroring!
+      - uses: actions/checkout@v4
       - uses: pixta-dev/repository-mirroring-action@v1
         with:
           target_repo_url: [email protected]:interactivethings/visualization-tool.git

.github/workflows/manual-load-test.yml

@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v4
 
       - name: Testing GraphQL - Components
         if: always()

.github/workflows/performance-tests-pr.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Send an HTTP request to start up the server
         run: |
           curl -s '${{ github.event.deployment_status.target_url }}/api/graphql' -X 'POST' -H 'Content-Type: application/json' -d '{"operationName":"DataCubeObservations","variables":{"locale":"en","sourceType":"sparql","sourceUrl":"https://lindas.admin.ch/query","cubeFilter":{"iri":"https://energy.ld.admin.ch/sfoe/bfe_ogd84_einmalverguetung_fuer_photovoltaikanlagen/9","filters":{"https://energy.ld.admin.ch/sfoe/bfe_ogd84_einmalverguetung_fuer_photovoltaikanlagen/Kanton":{"type":"single","value":"https://ld.admin.ch/canton/1"}}}},"query":"query DataCubeObservations($sourceType: String!, $sourceUrl: String!, $locale: String!, $cubeFilter: DataCubeObservationFilter!) { dataCubeObservations(sourceType: $sourceType, sourceUrl: $sourceUrl, locale: $locale, cubeFilter: $cubeFilter) }"}' > /dev/null

.github/workflows/performance-tests.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Download, unzip and install k6 binary
         run: |
             wget https://github.com/grafana/k6/releases/download/v0.49.0/k6-v0.49.0-linux-amd64.tar.gz