use mavenCentral() instead of deprecated jcenter()

[brody4hire]

resolves a deprecation warning

ref:

• https://docs.gradle.org/7.6/userguide/upgrading_version_6.html#jcenter_deprecation

[developernotes]

Hi @brodybits,

Thanks for this, we've merged this in!

[brody4hire]

👍 👍 thanks!!