publish java package

[SamYuan1990]

use a github action to publish java package

[SamYuan1990]

@ryjones , @davidkhala I suppose we need a github action to update https://github.com/Hyperledger-TWGC/java-gm/packages/520545

[SamYuan1990]

@ryjones , could you please help ref https://github.com/actions/setup-java/blob/main/docs/advanced-usage.md#Publishing-using-Gradle to help us publish a maven package?

[ryjones]

start here; it doesn't work now. #87

[SamYuan1990]

start here; it doesn't work now. #87

I suppose it due to the gradle version, as https://github.com/gradle/wrapper-validation-action#reporting-failures so, can we just publish the jar without verifying it? or specific a gradle version?