chore: Upgrade FreeBSD / OpenBSD in CI.

[fraggerfox]

• Upgrade OpenBSD to 7.8.
  • But relax warnings for the CI to not fail (we still run the test suite against it).
• Bump FreeBSD version to the latest supported 15.0.

Release notes can be found here:

• https://www.freebsd.org/releases/15.0R/relnotes/
• https://www.openbsd.org/78.html

[fraggerfox]

@cafkafk: I am aware that the following change is not the most ideal, but it should still run the tests in the CI against OpenBSD.

With 7.7 reaching EoL in about 4 months (at the time of writing), the CI in due course of time may fail to fetch packages for 7.7 via pkg_add

• https://endoflife.date/openbsd

Looking at the issues from

• OpenBSD support rust-lang/rustup#2168
• rustup: unrecognized OS type: OpenBSD rust-lang/rustup#2377

It looks like there is a bit of effort involved in making rustup pickup and support OpenBSD too since it is considered a tier 3 platform.

For now this work around is the best solution I can think of, until I can figure out a way to get it to play along like the other two BSDs.

Let me know, what you think and if this is an acceptable compromise.

[ariasuni]

Looks good to me

[gierens]

This looks good to me, as well. Disabling warnings and clippy only on FreeBSD/OpenBSD shouldn't be a problem. Anything relevant they might flag, should also be caught by the CI jobs for the other platforms.

[fraggerfox]

This looks good to me, as well. Disabling warnings and clippy only on FreeBSD/OpenBSD shouldn't be a problem. Anything relevant they might flag, should also be caught by the CI jobs for the other platforms.

Warnings / clippy are disabled only for OpenBSD, since FreeBSD has proper rustup support.

[gierens]

Warnings / clippy are disabled only for OpenBSD, since FreeBSD has proper rustup support.

Thanks for the hint, yeah, then it seems even less of a problem.