* cannon: remove final dep on bindings

Removes the last dependency that cannon has on `op-bindings/bindings`.
This is done my creating reusable code for reading foundry artifacts
from disk. This code should be reusable between any service that wants
to read the foundry artifacts from disk. This includes roundtrip
tests for JSON serialization of the foundry artifacts.

* op-chain-ops: address semgrep

https://github.com/golang/go/issues/22967