Investigate necessity for guava `x.x.x-android` vs `x.x.x-jre`

[diegomarquezp]

Our guava version is as follows:

google-auth-library-java/pom.xml

Line 79 in e7d4380

<project.guava.version>33.4.0-android</project.guava.version>

However, sdk-platform-java declares the x.x.x-jre version.

Investigate the need for this discrepancy.