libvisio: 0.1.3 -> 0.1.6

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

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

These checks were done:

- built on NixOS
- ran `/nix/store/bm8rhp6ljq7n0iqhpn4f1j3p013ps704-libvisio-0.1.6/bin/vsd2raw --version` and found version 0.1.6
- ran `/nix/store/bm8rhp6ljq7n0iqhpn4f1j3p013ps704-libvisio-0.1.6/bin/vss2raw --version` and found version 0.1.6
- ran `/nix/store/bm8rhp6ljq7n0iqhpn4f1j3p013ps704-libvisio-0.1.6/bin/vsd2xhtml --version` and found version 0.1.6
- ran `/nix/store/bm8rhp6ljq7n0iqhpn4f1j3p013ps704-libvisio-0.1.6/bin/vss2xhtml --version` and found version 0.1.6
- ran `/nix/store/bm8rhp6ljq7n0iqhpn4f1j3p013ps704-libvisio-0.1.6/bin/vsd2text --version` and found version 0.1.6
- ran `/nix/store/bm8rhp6ljq7n0iqhpn4f1j3p013ps704-libvisio-0.1.6/bin/vss2text --version` and found version 0.1.6
- found 0.1.6 with grep in /nix/store/bm8rhp6ljq7n0iqhpn4f1j3p013ps704-libvisio-0.1.6
- directory tree listing: https://gist.github.com/a7d83a73b3560d8cfa739ca582d98dcd

Manually cleaned up & split outputs.