Bump actions/checkout from 3.5.3 to 3.6.0 (#622)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.5.3 to 3.6.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3.5.3...v3.6.0)

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

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

.github/workflows/gradle-wrapper-validation.yml

@@ -12,6 +12,6 @@ jobs:
   validation:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3.5.3
+      - uses: actions/checkout@v3.6.0
 
       - uses: gradle/[email protected]

.github/workflows/main.yaml

@@ -14,7 +14,7 @@ jobs:
   build:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3.5.3
+      - uses: actions/checkout@v3.6.0
 
       - name: Set up JDK 11 for running Gradle
         uses: actions/[email protected]

.github/workflows/pr.yaml

@@ -11,7 +11,7 @@ jobs:
   build:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3.5.3
+      - uses: actions/checkout@v3.6.0
       - name: Set up JDK 11 for running Gradle
         uses: actions/[email protected]
         with:
@@ -23,7 +23,7 @@ jobs:
   check_links:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3.5.3
+      - uses: actions/checkout@v3.6.0
       - name: Link Checker
         uses: lycheeverse/[email protected]
         with: