Emma Dutton

**Describe the bug** `PemParse.DecodePEMKey()` was working in `v5.9.5` but since upgrading to `v5.10.0` this is now inaccessible and has been made internal: https://github.com/Vonage/vonage-dotnet-sdk/commit/5b6b2523e522742640cd5a1a4ca4d59aa4b2a151 We're using this to create a JWT...