Fix deprecated java plugin conventions

[lhvy]

Now that WPILib has decided to use Gradle 8.x, there are deprecation warnings in the default build.gradle files in project templates/examples. The following PR fixes the deprecation warnings. (More detail here)

I have also bumped the Java version now too.

[lhvy]

The same setting did not exist in vscode-wpilib/resources/gradle/javadt/build.gradle. Does this need to be updated/fixed as well?

[sciencewhiz]

I think bumping to 17 should be a different PR. We'd definitely want to fix the deprecation warning. I think it's still undecided whether to bump to 17 compatibility. See https://www.chiefdelphi.com/t/wpilib-blog-2023-kickoff-release-of-wpilib/420683/6 for the initial reasoning. Given that some teams reported GC problems last year, it seems like it may be prudent to keep it another year while alternate GC options are explored.

[lhvy]

I think bumping to 17 should be a different PR.

Fixed. Thanks for the feedback! :)

[PeterJohnson]

I actually merged the 17 change first. So this needs fixing up. We also recently added a javaxrp template so it should have the same change I assume.

[lhvy]

I actually merged the 17 change first. So this needs fixing up. We also recently added a javaxrp template so it should have the same change I assume.

Fixed, including to the new template you mentioned. Do I need to do this for vscode-wpilib/resources/gradle/javadt/build.gradle as well?

[PeterJohnson]

Yes please fix all the instances, thanks!

[lhvy]

Yes please fix all the instances, thanks!

Done 👍