MINOR: Gradle version update: 9.2.1 -->> 9.3.1

[dejan2609]

release notes:

• https://docs.gradle.org/9.3.0/release-notes.html
• https://docs.gradle.org/9.3.1/release-notes.html

ℹ️ Notes:

• done by-the-book (procedure mentioned here gradle/wrapper/README.md was followed)
• it makes sense to merge this with Gradle Shadow plugin version upgrade: KAFKA-19761 Gradle Shadow plugin version upgrade: 8.3.9 -->> 9.3.1 #20866

[dejan2609]

FYI @chia7712