Updated latest.md
Accept on DCO process
A new metric called `tasks_wait_duration_bucket` is also added to express as quantiles the average time spent by tasks awaiting execution. PR: #5981
![Example graph for the task wait time histograms.](https://user-images.githubusercontent.com/40891147/89990749-189d2600-dc83-11ea-8fde-ae579fdb0a0a.png)
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+#### <sub><sup><a name="5846" href="#5810">:link:</a></sup></sub> feature
+* Add optional support for mTLS to mandate that reverse proxies provide a valid certificate to connect to Concocurse. An RFC was raised for this https://github.com/concourse/rfcs/pull/73.
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