kawa 1.90 (devel)

Closes #34021.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
mongodb: devel cap

Adds an explanation of why we can’t proceed beyond 2.7.7 on the devel
build until we decide what to do with #33652. Removes the HEAD for the
reason that is it completely non-functional until that point, and has
been for a while.
mongodb: update 2.6.5 bottle.