Add support for MediaType in ApiVersionInserter

[spencergibb]

While the server side added support for MediaType and parameter

spring-framework/spring-webmvc/src/main/java/org/springframework/web/servlet/config/annotation/ApiVersionConfigurer.java

Line 98 in 09917fa

public ApiVersionConfigurer useMediaTypeParameter(MediaType compatibleMediaType, String paramName) {

the client side ApiVersionInserter did not, https://github.com/spring-projects/spring-framework/blob/main/spring-web/src/main/java/org/springframework/web/client/ApiVersionInserter.java#L32