update golang.org/x/... dependencies
Ahead of the upcoming v0.13.0 release candidates.
Signed-off-by: Daniel Martí <mvdan@mvdan.cc>
Change-Id: Iee7d455a5da30a7e6181647897fa86a07f91e33d
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1212989
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>
Reviewed-by: Roger Peppe <rogpeppe@gmail.com>