Exclude bouncycastle & argo from 1.5.2 obfuscated mappings

Corresponds to 1.5.1 exclusions:
https://github.com/MinecraftPortCentral/MCPC-Plus/commit/4989826eaeaf39cc11ca67f1491a58facb1260dc
https://github.com/MinecraftPortCentral/MCPC-Plus/commit/04ec475a7d77d801a33654564e5936119a53a618