Use manylinux2014 base image instead

[kazarmy]

This pr uses the manylinux2014 base image instead of manylinux_2_24 because the latter is EOL. The manylinux_2_24 base image was chosen over manylinux_2_28 because the latter doesn't have an i686 image.

[kazarmy]

Unfortunately it appears that i686 support will need to be dropped, since there doesn't seem to be a quick way to obtain i686 CentOS 7 clang binaries. I still think manylinux2014 should be used instead of manylinux_2_28 since it's older (and besides I don't want to go through the above again, at least for now).

[XVilka]

Unfortunately it appears that i686 support will need to be dropped, since there doesn't seem to be a quick way to obtain i686 CentOS 7 clang binaries. I still think manylinux2014 should be used instead of manylinux_2_28 since it's older (and besides I don't want to go through the above again, at least for now).

I think it is fine to drop i686 for bindings, if anyone needs them for such a specific case they can build bindings themselves.

[wargio]

i don't think we should keep support for 32 bit x86.

[kazarmy]

Ok done. The upload-artifact problem appears unrelated.