Remove unnecessary Arc from AhoCorasick since it's using it internally (#25379)
Péter Leéh
created
This PR removes the unnecessary `Arc` around the `AhoCorasick` struct,
since [it's already using it
internally](https://docs.rs/aho-corasick/latest/aho_corasick/struct.AhoCorasick.html#cloning).
Release Notes:
- N/A