update GH validate workflow to 9.2.8, 9.4.7, 9.6.3

[juhp]

No description provided.

[Mikolaj]

Wow. Did the tests fail, because the output changed or did something new break now?

[juhp]

Wow. Did the tests fail, because the output changed or did something new break now?

ah no, I tried to re-enable Windows for 9.6, but it still appears to fail... so I undid that now

[ulysses4ever]

Already part of #9330, but if it helps an immediate issue, I'm fine with rebasing.

[juhp]

@ulysses4ever ah okay - sorry I wasn't aware

Maybe good to get this first step in anyway?
Decoupling 9.8 might be easier... but anyway :-)

[ulysses4ever]

@juhp absolutely, please, go ahead. There's enough trouble with that guy, so factoring out independent pieces is always helpful.

[juhp]

Thanks!

[Mikolaj]

@juhp: BTW, a more delicate way of merging outright is via the merge_me and merge_delay_passed labels. Less risk of comitting something CI has not run and of creating git art via non-fast-foward merge commits. :)

[juhp]

Thanks @Mikolaj - I was wondering: should have checked - will do that next time

[Mikolaj]

Thank you. :)