Upgrade to go 1.23

[thecsw]

Following upon #461, updating the go version to latest, the 1.23 release gives us many new improvements in both the compiler land and tooling land to utilize:

• Profile Guided Optimizations (PGOs) straight with the compiler allows for 2-7% perf improvements. GA in 1.21.
• Built-in min, max, so we don't have to constantly implement our own, see: utility.go:129, modules/mssql/connection.go:749, modules/oracle/types_test.go:455, lib/ssh/channel.go:134
• Structured logging in the standard library!
• Slices and maps helpers in the standard library.
• ...and many other improvements all around that we would get for free with all the new tooling to improve zgrab2 further.

How to Test

CI/CD involved should handle it. As Go team noted in all release notes since 1.20 (current version in this project) to now,

As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before.

Compiling and running the program yields no issues.

Notes & Caveats

Only one "breaking" compile-time issue found in modules/amqp091/scanner.go:250, where ChannelMax was expecting an int but got an uint16. Casting here is safe as this is a type promotion with no requirements for this variable to be exactly 16 bits.

Issue Tracking

Add a link to the relevant GitHub issue(s) if the pull request resolves it.

[phillip-stephens]

Hey @thecsw, thanks for this!

Off-hand, though, I'm hesitant to want to bump this to Go 1.23 for backwards-compatibility. We have users using older OS's and don't want to preclude them from being able to compile from source. All the compiler-driven enhancements you mention can still be obtained today by using the latest Go compiler on the existing source code. I don't think the other built-ins standard library enhancements can justify decreasing backwards compatibility, IMO.

[thecsw]

Sure thing and totally valid! With this bump, it would require, at least on major systems, to run at least Big Sur for Mac and windows 10 (some new ports for bsd/etc. introduced)—makes sense for compat

We could possibly leave this open/archived for whenever time comes to upgrade to go1.23, at least