[AUTOMATIC] Release/6.0.1

[RCGitBot]

This is an automatic release.

Other Changes

• Remove creation of special UnityIAP package (Remove creation of special UnityIAP package #346) via Cesar de la Vega (@vegaro)
• Add BillingClient versions to VERSIONS table (Add BillingClient versions to VERSIONS table #345) via Cesar de la Vega (@vegaro)
• Update Unity IAP compatibility for v6 in VERSIONS.md (Update Unity IAP compatibility for v6 in VERSIONS.md  #344) via Cesar de la Vega (@vegaro)
• update RELEASING file to use the latest process (update RELEASING file to use the latest process #342) via Andy Boedo (@aboedo)

[vegaro]

We can close this, it's not releasing anything public