chore(deps): Update Rust crate which to v7

Author: renovate[bot]

Cargo.lock

@@ -121,7 +121,7 @@ nix = { version = "0.27", features = ["fs", "process", "signal", "term"] }
 regex = "1"
 tempfile = "3"
 thiserror = "2.0.0"
-which = { version = "5.0", optional = true }
+which = { version = "7.0", optional = true }
 
 [lints]
 workspace = true