Update "Supported Core Protocol Features Matrix" to add that Resumption is supported

[leonard84]

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Documentation Issue

https://rsocket.io/about/implementations says that resumption isn't supported for rsocket-java.

However, from searching through the issues it looks like it is supported.

Improvement Suggestion

Add the X in the Resumption column, if it is indeed supported.

It could also update the version information to the latest released version.

Additional context