net/http: update bundled golang.org/x/net/http2

# AWS EKS
Backported To: go-1.15.15-eks
Backported On: Thu, 22 Sept 2022
Backported By: [email protected]
Backported From: release-branch.go1.16
EKS Patch Source Commit: danbudris@f4338f7
Upstream Source Commit: golang@0551247

# Original Information

Pull in approved backports to golang.org/x/net/http2:

    aa5a62b http2: prioritize RST_STREAM frames in random write scheduler

By doing:

    $ go get -d golang.org/x/[email protected]
    $ go mod tidy
    $ go mod vendor
    $ go generate -run=bundle std

Fixes golang#50449

Change-Id: I4a6a8ae943d2d1705209e648a63421914062d3e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/375815
Reviewed-by: Dmitri Shuralyov <[email protected]>
Run-TryBot: Carlos Amedee <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Trust: Carlos Amedee <[email protected]>