Update diagnose tests submodule
Update diagnose tests submodule

After the changes in the develop branch for the Span API added in #708,
update the diagnose tests to also test for the Ruby gem's
`filter_data_keys` config option.

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appsignal/appsignal-ruby,appsignal/appsignal-ruby,appsignal/appsignal-ruby,appsignal/appsignal-ruby