ci: bump actions/upload-artifact from 4 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/android-build.yml

@@ -37,7 +37,7 @@ jobs:
           ./gradlew assembleDebug --no-daemon
 
       - name: Upload Android Debug APK
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: app-debug
           path: android/app/build/outputs/apk/debug/app-debug.apk

.github/workflows/ci.yml

@@ -48,13 +48,13 @@ jobs:
           ./gradlew assembleRelease --no-daemon
 
       - name: Upload debug APK
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: app-debug
           path: android/app/build/outputs/apk/debug/app-debug.apk
 
       - name: Upload release APK
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: app-release
           path: android/app/build/outputs/apk/release/app-release-unsigned.apk