build(deps): bump actions/checkout from 4 to 5 (#346)

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/verify.yaml

@@ -26,15 +26,15 @@ jobs:
   Checkstyle:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: eclipse-edc/.github/.github/actions/setup-build@main
       - name: Run Checkstyle
         run: ./gradlew checkstyleMain checkstyleTest checkstyleTestFixtures
 
   Javadoc:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: eclipse-edc/.github/.github/actions/setup-build@main
 
       - name: Run Javadoc
@@ -43,7 +43,7 @@ jobs:
   Unit-Tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: eclipse-edc/.github/.github/actions/setup-build@main
 
       - name: Run unit tests
@@ -52,7 +52,7 @@ jobs:
   Postgresql-Integration-Tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: eclipse-edc/.github/.github/actions/setup-build@main
 
       - name: Postgresql Tests
@@ -61,7 +61,7 @@ jobs:
   Component-Tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: eclipse-edc/.github/.github/actions/setup-build@main
 
       - name: Component Tests
@@ -70,15 +70,15 @@ jobs:
   End-To-End-Tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: eclipse-edc/.github/.github/actions/setup-build@main
       - name: End to End Tests
         run: ./gradlew test -DincludeTags="EndToEndTest" -PverboseTest=true
 
   API-Tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: eclipse-edc/.github/.github/actions/setup-build@main
 
       - name: API Tests