xqilla: 2.3.3 -> 2.3.4

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/xqilla/versions.

These checks were done:

- built on NixOS
- /nix/store/q0djr7z4ixv0mx02crj7ifqapgm54crr-xqilla-2.3.4/bin/xqilla passed the binary check.
- 1 of 1 passed binary check by having a zero exit code.
- 0 of 1 passed binary check by having the new version present in output.
- found 2.3.4 with grep in /nix/store/q0djr7z4ixv0mx02crj7ifqapgm54crr-xqilla-2.3.4
- directory tree listing: https://gist.github.com/70c99ca62187f093025b5404d2a4a6da
- du listing: https://gist.github.com/38a73f127b9835b2a8c187242de78a1d