libraries/lgi: Experimental fix for Lua 5.4

[quackzack]

lgi fails to build on Slackware64-current due to Lua 5.4. There are issue discussions on the lgi-devs official repository here: https://github.com/lgi-devs/lgi/issues/247 https://github.com/lgi-devs/lgi/pull/249 They have yet to give a proper release but this builds for me and awesome window manager builds against it as well.

Also https://github.com/pavouk/lgi/ is the old repo. It now redirects to https://github.com/lgi-devs/lgi/.

[github-actions[bot]]

reverse dependencies - libraries/lgi

• [ ] desktop/awesome

[github-actions[bot]]

✅ sbolint - libraries/lgi ✅

sbolint: lgi checks out OK

[Ponce]

hi @quackzack ,

thanks for your contribution!

I pushed it in its own branch.