Parent #17173

This issue is about resolving the GET_SIGNATURES and signatures compile warnings for the WordPress module, and possibly, for the lib modules as well.

PS: Some of those warnings are already deprecated (see here).

• This GET_SIGNATURES constant was deprecated in API level 28. Use GET_SIGNING_CERTIFICATES instead.
• This signatures field was deprecated in API level 28. Use signingInfo instead.

For more info see:

• PackageManager.GET_SIGNATURES
• PackageInfo.signatures