Mitigations to CVE-2023-44487 were added to golang.org/x/net v0.17
(c4e9120dde92bc2cce99f853d4f1c5afe1cbaa23) and in Go v1.20.10[1]. This PR
bumps Go to v1.20 to benefit from the patches to the standard library.
Aside, this patch also bump the pseudo-standard golang.org/x/...
libraries to their latest available version for good measure.
[1]: https://pkg.go.dev/vuln/GO-2023-2102