[security] Go 1.19.2 and Go 1.18.7 pre-announcement

[anno...@golang.org]

Hello gophers,

We plan to issue Go 1.19.2 and Go 1.18.7 on Tuesday, October 4.

These minor releases include PRIVATE security fixes to the standard library.

Following our security policy, this is the pre-announcement of those releases.

Thanks,
The Go team