Build: Upgrade to Gradle 7.5.1

[XN137]

See https://docs.gradle.org/7.5.1/release-notes.html

Upgraded by running the following command twice and manually re-applying iceberg customizations:

./gradlew wrapper --gradle-version 7.5.1 --distribution-type bin

[XN137]

rebased just in case

@rdblue for your consideration if you have time

[XN137]

rebased and upgraded to v7.5.1

ping @rdblue

[openinx]

I think it's ready to go, let's merge this. Thank all for contribution!