chore: 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] <[email protected]>

Author: dependabot[bot]

.github/workflows/pull-request.yml

@@ -20,7 +20,7 @@ jobs:
       runs-on: ubuntu-latest
       steps:
       - name: "Checkout"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - uses: actions/[email protected]
         with:
           node-version: 18
@@ -40,7 +40,7 @@ jobs:
       runs-on: ubuntu-latest
       steps:
           - name: "Checkout"
-            uses: actions/checkout@v4
+            uses: actions/checkout@v6
           - name: "Run Android Unit Tests"
             working-directory: android
             run: ./gradlew test
@@ -50,7 +50,7 @@ jobs:
       runs-on: ubuntu-latest
       steps:
         - name: "Checkout"
-          uses: actions/checkout@v4
+          uses: actions/checkout@v6
         - name: "Run Android lint"
           working-directory: android
           run: ./gradlew lint
@@ -60,7 +60,7 @@ jobs:
       runs-on: ubuntu-latest
       steps:
         - name: "Checkout"
-          uses: actions/checkout@v4
+          uses: actions/checkout@v6
         - name: "Run Android kotlin lint"
           working-directory: android
           run: ./gradlew ktlintCheck
@@ -70,7 +70,7 @@ jobs:
       runs-on: ubuntu-latest
       steps:
         - name: Checkout
-          uses: actions/checkout@v4
+          uses: actions/checkout@v6
         - uses: actions/[email protected]
           with:
             node-version: 18
@@ -98,7 +98,7 @@ jobs:
       runs-on: macos-15
       steps:
         - name: Checkout
-          uses: actions/checkout@v4
+          uses: actions/checkout@v6
         - uses: actions/[email protected]
           with:
             node-version: 18

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
         needs: ['confirm-main-branch']
         steps:
             - name: Checkout
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
             - uses: actions/[email protected]
               with:
                 node-version: 18
@@ -38,7 +38,7 @@ jobs:
         needs: ['confirm-main-branch']
         steps:
             - name: Checkout
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Run Android Unit Tests
               run: echo "pwd"; pwd; echo "ls:"; ls; cd android; ./gradlew test
@@ -49,7 +49,7 @@ jobs:
         needs: ['android-unit-tests', 'react-tests']
         steps:
           - name: Checkout internal/development
-            uses: actions/checkout@v4
+            uses: actions/checkout@v6
 
           - name: Setup Node.js
             uses: actions/[email protected]