go: Upgrade 1.20.4 -> 1.20.5

Upgrade to latest 1.20.x release:
go.git$ git log --oneline go1.20.4..go1.20.5
e827d41c0a (tag: go1.20.5) [release-branch.go1.20] go1.20.5
c0ed873cd8 [release-branch.go1.20] cmd/go: disallow package directories containing newlines
356a419e2f [release-branch.go1.20] cmd/go: enforce flags with non-optional arguments
fa60c381ed [release-branch.go1.20] cmd/go,cmd/cgo: in _cgo_flags use one line per flag
36144ba429 [release-branch.go1.20] runtime: implement SUID/SGID protections
5036ba77eb [release-branch.go1.20] net: skip TestFileFdBlocks if the "unix" network is not supported
b249ec5655 [release-branch.go1.20] cmd/go/internal: update documentation of go test and go generate
4b95fc1e6c [release-branch.go1.20] cmd/go: save checksums for go.mod files needed for go version lines
31a1e19a59 [release-branch.go1.20] net, os: net.Conn.File.Fd should return a blocking descriptor
450c8021a5 [release-branch.go1.20] runtime: change fcntl to return two values
22741120ee [release-branch.go1.20] runtime: consistently define fcntl
9270e3be8f [release-branch.go1.20] os: if descriptor is non-blocking, retain that in Fd method
600636e931 [release-branch.go1.20] crypto/rsa: use BoringCrypto for 4096 bit keys
afbe101950 [release-branch.go1.20] cmd/compile: fix bswap/load rewrite rules

Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>