sip: bump revision to point to current Python

Closes #34959.
sip: update 4.16.3_1 bottle.
icdiff 1.6.0

Closes #34970.

Signed-off-by: Tim D. Smith <git@tim-smith.us>
baresip 0.4.11 (new formula)
baresip: indent correctly
baresip: add 0.4.11 bottle.