go: update 1.20.8 -> 1.20.9

go: update 1.20.8 -> 1.20.9

Upgrade to latest 1.20.x release [1]:

$ git log --oneline go1.20.8..go1.20.9
68f9a6e2ad (tag: go1.20.9) [release-branch.go1.20] go1.20.9
31d5b604ac [release-branch.go1.20] cmd/compile: use absolute file name in isCgo check
83dce45959 [release-branch.go1.20] cmd/link: suppress -bind_at_load deprecation warning for ld-prime
08c544db98 [release-branch.go1.20] cmd/link: disable DWARF by default in c-shared mode on darwin
071f03a8e5 [release-branch.go1.20] cmd/link: force old Apple linker in plugin mode

[1] https://github.com/golang/go/compare/go1.20.8...go1.20.9

Signed-off-by: Jose Quaresma <jose.quaresma@foundries.io>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>