cmd: vendor github.com/google/pprof to fix mangled type parameter symbol names
Updates github.com/google/pprof to bring in the commit from
https://github.com/google/pprof/pull/717 which fixes mangled
symbol names for type parameters.
Fixes #54105
Change-Id: I01af9f780aba3338b960a03b30906a23642e4448
Reviewed-on: https://go-review.googlesource.com/c/go/+/420234
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com> Reviewed-by: Than McIntosh <thanm@google.com>