go: update 1.20.12 -> 1.20.13

go: update 1.20.12 -> 1.20.13

Upgrade to latest 1.20.x release [1]:

$ git log --oneline go1.20.12..go1.20.13
a95136a88c (tag: go1.20.13) [release-branch.go1.20] go1.20.13
5c38c04957 [release-branch.go1.20] crypto/tls: align FIPS-only mode with BoringSSL policy
9e4abed39b [release-branch.go1.20] crypto/internal/boring: upgrade module to fips-20220613
95afc744a7 [release-branch.go1.20] runtime: put ReadMemStats debug assertions behind a double-check mode
8cb86b5f85 [release-branch.go1.20] os/signal: skip nohup tests on darwin builders
59ffd3b90d [release-branch.go1.20] os/signal: remove go t.Run from TestNohup

[1] https://github.com/golang/go/compare/go1.20.12...go1.20.13

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