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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/47rbdzbgccrrdc63fnsnwklria9clmms-spidermonkey-52.7.4/bin/js52 -h’ got 0 exit code
- ran ‘/nix/store/47rbdzbgccrrdc63fnsnwklria9clmms-spidermonkey-52.7.4/bin/js52 --help’ got 0 exit code
- ran ‘/nix/store/47rbdzbgccrrdc63fnsnwklria9clmms-spidermonkey-52.7.4/bin/js52 -v’ and found version 52.7.4
- ran ‘/nix/store/47rbdzbgccrrdc63fnsnwklria9clmms-spidermonkey-52.7.4/bin/js52 --version’ and found version 52.7.4
- ran ‘/nix/store/47rbdzbgccrrdc63fnsnwklria9clmms-spidermonkey-52.7.4/bin/js52-config --version’ and found version 52.7.4
- found 52.7.4 with grep in /nix/store/47rbdzbgccrrdc63fnsnwklria9clmms-spidermonkey-52.7.4
- directory tree listing: https://gist.github.com/7e5182415a0a1bce8071576312c08a3a

spidermonkey_52: 52.6.0 -> 52.7.4