Add Boost v1.89 support & use it on Windows

[yhabteab]

• Backport of Bump Boost shipped for Windows to v1.89 #10537

[julianbrost]

This does more than the title suggest in that 6380381 is necessary to allow building with Boost 1.89 in the first place, doesn't it?

[yhabteab]

This does more than the title suggest in that 6380381 is necessary to allow building with Boost 1.89 in the first place, doesn't it?

That's the side effect of bumping the Boost version to 1.89. You don't mention the purpose of each and every commit in a PR title, do you? Besides, I'm using the same PR title (but not necessarily the same wording) as the original PR, so why is this a problem now?

[julianbrost]

It's not a problem, that's something I find noteworthy as well. This isn't a Windows-only PR, it also ensures compatibility with (upcoming) distribution versions using that Boost version as well.

[yhabteab]

Fine! Updated.