chore(deps): bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...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/build.yml

@@ -32,7 +32,7 @@ jobs:
     timeout-minutes: 45
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: set up Java 21
       uses: actions/setup-java@v4
@@ -55,7 +55,7 @@ jobs:
     timeout-minutes: 45
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: set up Java 21
       uses: actions/setup-java@v4
@@ -74,7 +74,7 @@ jobs:
     timeout-minutes: 45
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: set up Java 21
       uses: actions/setup-java@v4
@@ -93,7 +93,7 @@ jobs:
     timeout-minutes: 45
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: set up Java 21
       uses: actions/setup-java@v4
@@ -118,7 +118,7 @@ jobs:
     timeout-minutes: 45
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: set up Java 21
       uses: actions/setup-java@v4
@@ -143,7 +143,7 @@ jobs:
       - build-Snippets
       - build-tutorials
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: set up Java 21
         uses: actions/setup-java@v4
         with:

.github/workflows/generate-v3.yml

@@ -25,7 +25,7 @@ jobs:
     timeout-minutes: 45
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: set up JDK 17
       uses: actions/setup-java@v4

.github/workflows/lint.yml

@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up JDK 17
         uses: actions/setup-java@v4