Sets minimum Android API version to 26 in validation-jobs.yml

Author: mnmaita

.github/workflows/validation-jobs.yml

@@ -99,7 +99,7 @@ jobs:
         run: cargo install --force cargo-ndk
 
       - name: Build .so file
-        run: cargo ndk -t arm64-v8a -o android_example/app/src/main/jniLibs build --package bevy_mobile_example
+        run: cargo ndk -t arm64-v8a -P 26 -o android_example/app/src/main/jniLibs build --package bevy_mobile_example
 
       - name: Build app for Android
         run: cd examples/mobile/android_example && chmod +x gradlew && ./gradlew build