mesa: update to 20.0.7, remove ocl-icd from mesa-opencl deps

[st3r4g]

Closes #21899

didn't feel like revbumping just for this, mesa gets updated quite often
updated also

[ahesford]

Looks good to me

[HadetTheUndying]

https://www.reddit.com/r/archlinux/comments/gkft1u/mesa_2007_results_in_xorg_crash/

Looks like there have been two updates on Arch's end today, both are resulting is users complaining of crashes.

[st3r4g]

I've seen it, but that's probably due to Arch compiling with gcc 10 (a gcc bug). Void is still on 9. Anyway, I'm building 20.0.7 locally to try it out just to be sure

[HadetTheUndying]

@st3r4g I'll test it with nouveau in a bit just to be sure, but yeah it seems to be working fine for me now that i finished building.

[st3r4g]

Same here, Arch users experienced Xwayland crashes but Firefox on Xwayland is running fine here (x86_64-musl, sway, Intel GPU)

[st3r4g]

both are resulting is users complaining of crashes.

I thought they fixed it with the second revision

[HadetTheUndying]

@st3r4g confirmed that rivision 2 fixed it on the Arch end of things just updating my previous post. No issues on Void at all, should be fine to merge.