Update TrustKit to 1.1.5

[mennovogel]

We would like to have the latest version of TrustKit, version 1.1.5 (this version is not officially tagged, but it is released).

For some reason our project crashes with a NullPointerException in Parley.configure(...) when we compile the project with TrustKit 1.1.2.

[alexkok]

Maybe related to datatheorem/TrustKit-Android#85 (comment)?

We'll bump it and release a new version 👍

[alexkok]

Released in 3.9.7 🚀