Update actions/checkout action to v4 (#124)

* Update actions/checkout action to v4

* Update actions/checkout action to v4

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Russell Banks <[email protected]>

Author: renovate[bot]

.github/workflows/android.yml

@@ -6,6 +6,6 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Build with Gradle
       run: ./gradlew build

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

@@ -7,6 +7,6 @@ jobs:
     name: Validate Gradle Wrapper
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Validate Gradle Wrapper
         uses: gradle/wrapper-validation-action@v1