deps: update actions/checkout action to v5 (#2520)

Author: renovate-bot

.github/workflows/hermetic_library_generation.yaml

@@ -32,7 +32,7 @@ jobs:
         else
           echo "SHOULD_RUN=true" >> $GITHUB_ENV
         fi
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       if: env.SHOULD_RUN == 'true'
       with:
         fetch-depth: 0

.github/workflows/unmanaged_dependency_check.yaml

@@ -5,7 +5,7 @@ jobs:
   unmanaged_dependency_check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-java@v4
         with:
           distribution: temurin

.github/workflows/update_generation_config.yaml

@@ -26,7 +26,7 @@ jobs:
       # the branch into which the pull request is merged
       base_branch: main
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         fetch-depth: 0
         token: ${{ secrets.CLOUD_JAVA_BOT_TOKEN }}