Update to commit 64fe4acc97e6d76551cea7598c201f05ecd65639

https://github.com/foundry-rs/foundry/tree/64fe4acc97e6d76551cea7598c201f05ecd65639
https://github.com/foundry-rs/foundry/commit/64fe4acc97e6d76551cea7598c201f05ecd65639

This update is pulled in so that the new config file format can be
adopted.
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>