Bump actions/checkout from 3 to 4 (#101)

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](https://github.com/actions/checkout/compare/v3...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/docs.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Run link check
         uses: gaurav-nelson/github-action-markdown-link-check@1.0.15
         with:

.github/workflows/maven.yml

@@ -16,7 +16,7 @@ jobs:
     timeout-minutes: 15
     steps:
       - name: Checkout this PR planetiler-openmaptiles repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up JDK 17
         uses: actions/setup-java@v3
         with:
@@ -43,7 +43,7 @@ jobs:
     timeout-minutes: 15
     steps:
       - name: Checkout this PR planetiler-openmaptiles repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up JDK ${{ matrix.jdk }}
         uses: actions/setup-java@v3
         with:
@@ -65,7 +65,7 @@ jobs:
     timeout-minutes: 15
     steps:
       - name: Checkout this PR planetiler-openmaptiles repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up JDK 17
         uses: actions/setup-java@v3
         with:
@@ -82,7 +82,7 @@ jobs:
     timeout-minutes: 15
     steps:
       - name: Checkout this PR planetiler-openmaptiles repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Cache data/sources
         uses: ./.github/cache-sources-action
       - name: Set up JDK
@@ -111,13 +111,13 @@ jobs:
     timeout-minutes: 15
     steps:
       - name: Checkout parent Planetiler repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: onthegomap/planetiler
           ref: main
           path: planetiler
       - name: Checkout this PR planetiler-openmaptiles repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: planetiler-openmaptiles
       - name: Move planetiler-openmaptiles into planetiler

.github/workflows/performance.yml

@@ -28,12 +28,12 @@ jobs:
           access_token: ${{ github.token }}
 
       - name: 'Checkout PT-OMT PR branch'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: branch
 
       - name: 'Checkout PT-OMT base'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: base
           ref: ${{ github.event.pull_request.base.sha }}

.github/workflows/snapshot.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK
         uses: actions/setup-java@v3
         with:

.github/workflows/update-pr.yml

@@ -18,7 +18,7 @@ jobs:
     steps:
       # report status back to pull request
       - uses: haya14busa/action-workflow_run-status@v1
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: 'Download branch build info'
         uses: dawidd6/action-download-artifact@v2
         with: