Bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/aws-lambda-java-core.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up JDK 1.8
       uses: actions/setup-java@v4
       with:

.github/workflows/aws-lambda-java-events-sdk-transformer.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up JDK 1.8
       uses: actions/setup-java@v4
       with:

.github/workflows/aws-lambda-java-events.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up JDK 1.8
       uses: actions/setup-java@v4
       with:

.github/workflows/aws-lambda-java-log4j2.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up JDK 1.8
       uses: actions/setup-java@v4
       with:

.github/workflows/aws-lambda-java-profiler.yml

@@ -22,7 +22,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up JDK
         uses: actions/setup-java@v4

.github/workflows/aws-lambda-java-serialization.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up JDK 1.8
       uses: actions/setup-java@v4
       with:

.github/workflows/aws-lambda-java-tests.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up JDK 1.8
       uses: actions/setup-java@v4
       with:

.github/workflows/repo-sync.yml

@@ -16,7 +16,7 @@ jobs:
     env:
       IS_CONFIGURED: ${{ secrets.SOURCE_REPO != '' }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         if: ${{ env.IS_CONFIGURED == 'true' }}
       - uses: repo-sync/github-sync@v2
         name: Sync repo to branch

.github/workflows/runtime-interface-client_merge_to_main.yml

@@ -28,7 +28,7 @@ jobs:
       contents: read
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up JDK 1.8
       uses: actions/setup-java@v4

.github/workflows/runtime-interface-client_pr.yml

@@ -15,7 +15,7 @@ jobs:
   smoke-test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up JDK 1.8
       uses: actions/setup-java@v4
@@ -40,7 +40,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up JDK 1.8
       uses: actions/setup-java@v4