worker: 3.15.0 -> 3.15.1 (#40820)

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

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

These checks were done:

- built on NixOS
- /nix/store/m3af3zhrxravdkwq8fcsgqrqyywfbl20-worker-3.15.1/bin/worker 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 3.15.1 with grep in /nix/store/m3af3zhrxravdkwq8fcsgqrqyywfbl20-worker-3.15.1
- directory tree listing: https://gist.github.com/25a3c6e8ffd32fd4b88511e305669c51
- du listing: https://gist.github.com/6f5f0c3dfcb21b2d414fafa466d13283