Upgrade the gradle version of build config plugin to 7.3.2

[NightXlt]

Feature:

1. Upgrade the gradle version to 7.3.2 for mitigating for log4j vulnerability in Gradle builds
2. Support agp7.0

How to test

• Comment several codes as follows:

• execute ./gradlew publishToMavenLocal task to generate local build-config plugin

• uncomment previous commented code, and execute build task, and you'll see generated code test-build-config-agp7/build/gen/buildconfig/src/main/com/example/test/build/config/agp7/BuildConfig.java
  

[SakiiCode]

Can you upload your fork to some gradle repository?