This change https://github.com/restsharp/RestSharp/commit/8e96bba46d7d2101319529ea68782a39aaa3bfa8#diff-5df1c2c9f9f84319d21c361a0a336251f7698927e2f1c0b0adab575fa407c6e6 simply [casts object values](https://github.com/restsharp/RestSharp/blob/5830af48cf85b8eaadf89d83fbc3bf46106f5873/src/RestSharp/Ensure.cs#L25) into strings, this is causing issues since the [public api accepts object values](https://github.com/restsharp/RestSharp/blob/8e96bba46d7d2101319529ea68782a39aaa3bfa8/src/RestSharp/Request/RestRequestExtensions.cs#L97).