[mediacapture-main] new commits pushed by alvestrand

The following commits were just pushed by alvestrand to https://github.com/w3c/mediacapture-main:

* Add Henrik Boström to the list of editors.

It is my understanding that henbos is part of the editors for
mediastream-main but not listed among the editors. This commits fixes
that.
  by Armando Miraglia
https://github.com/w3c/mediacapture-main/commit/dd75e646264621d954a923e3539d6bdd574d5c33

* Merge pull request #596 from armax00/editors

Add Henrik Boström to the list of editors.
  by Harald Alvestrand
https://github.com/w3c/mediacapture-main/commit/59cb5f30c362c0e6e155f7a0ccf4e11ffe01cfa5