all: update vendored golang.org/x/net
Pull in CL 576895:
ec05fdcd http2: don't retry the first request on a connection on GOAWAY error
For #66668.
Fixes #60636.
Change-Id: I9903607e3d432a5db0325da82eb7f4b378fbddde
Reviewed-on: https://go-review.googlesource.com/c/go/+/576976
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>