Update the charter

[behnam]

Our charter needs some update; at least the "end date".

Thanks, @r12a, for moving it to GH.

About the end date, I believe we talked about extending it by one year, but looks like we didn't take a note of it in the minutes. We can finalize it at the meeting next week, if needed.

[r12a]

I'm closing this, since it hasn't been discussed for over a year. We can reopen if meetings and work restart.