### Description
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### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
…ime/java (#22771)"
This reverts commit 632a36a233.
### Description
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### Motivation and Context
Run E2E tests using Browserstack failed due to this PR.
### Description
This change is to update the Gradle version within java project to 8.7,
it also upgrades the JAVA to 17. Gradle version from react-native was
also updated to 7.5 to make it compatible with changes from the Java
directory. However, the target java version remains the same. Java
version from these will be upgraded in a separated PR.
This is spited from #22206
### Motivation and Context
This is the first step to upgrade the react native version.
### Description
Bump spotless and the Gradle wrapper to 6.25.0 and 8.6 respectively to
allow compiling ORT on Java 21. The build still targets Java 8.
I'm not sure if there will be CI changes necessary to use this PR,
specifically for the Gradle version as I don't know if that is cached
somewhere earlier in the CI build process.
The new Gradle version adds a warning that using `--source` and
`--target` to select the Java language version is obsolete which is
annoying, we can fix it if we decide to only allow building on newer
versions of Java, while still supporting running on Java 8.
### Motivation and Context
Java 21 is the latest LTS release of Java and ORT should be able to
build on it.
- Update Gradle version used in most places from 6.8.3 to 8.0.1. Update Android Gradle Plugin version where applicable.
Not updated in this change: React Native Android projects (under `js/react_native/`). That can be done later along with updating the React Native projects.
- Add Gradle wrapper in `java/` to make it easier to consistently use a specific Gradle version.
