mate.caja-extensions: 1.20.0 -> 1.20.1

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

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

These checks were done:

- built on NixOS
- /nix/store/1m1zknl4rxcnkkbqhd0ks341bh2ghl0y-caja-extensions-1.20.1/bin/caja-sendto passed the binary check.
- /nix/store/1m1zknl4rxcnkkbqhd0ks341bh2ghl0y-caja-extensions-1.20.1/bin/.caja-sendto-wrapped passed the binary check.
- 2 of 2 passed binary check by having a zero exit code.
- 0 of 2 passed binary check by having the new version present in output.
- found 1.20.1 with grep in /nix/store/1m1zknl4rxcnkkbqhd0ks341bh2ghl0y-caja-extensions-1.20.1
- directory tree listing: https://gist.github.com/6344a0c82a50b4091f71ada2afdffb14
- du listing: https://gist.github.com/e7f39d01f373332636f3b0e47953fb4c