Bump Gradle in example apps so it's possible to build them on the latest JDK

[bartekpacia]

Gradle 8.9 doesn't support the latest stable Java 23. (see Gradle-Java compatibility matrix)

Java 23 is the default when using brew install openjdk (which is arguably a very popular way to install JDK on macOS). I use it.

Repro

$ brew install openjdk

$ echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/openjdk.jdk/Contents/Home

$ cd packages/patrol/example

$ flutter build apk --config-only

cd android && ./gradlew :app:assembleDebug

Results in:

FAILURE: Build failed with an exception.

* What went wrong:
BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 67
> Unsupported class file major version 67

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

BUILD FAILED in 26s
Running Gradle task 'assembleDebug'...                             27.5s

Note

Using flutter build apk --debug works because by default, it ignores $JAVA_HOME and defaults to the Java bundled in IntelliJ IDEA/Android Studio. Still, when the developer calls flutter config --jdk-dir "$JAVA_HOME (and JDK 23 is in $JAVA_HOME), the same problem occurs.

[docs-page]

To view this pull requests documentation preview, visit the following URL:

docs.page/leancodepl/patrol~2503

Documentation is deployed and generated using docs.page.

[pdenert]

It's ok, but please add entry to patrol package changelog

[bartekpacia]

Sure, done!

[pdenert]

Thanks! And now resolve the conflict please 😉

[pdenert]

LGTM