Disable default-features on thiserror

We're barely using thiserror at all in moka, and we don't require any of
thiserror's features.

We might also want to consider not using thiserror at all and pruning
that whole dependency tree.

Cargo.toml

@@ -53,7 +53,7 @@ parking_lot = "0.12"
 portable-atomic = "1.6"
 smallvec = "1.8"
 tagptr = "0.2"
-thiserror = "2.0"
+thiserror = { version = "2.0", default-features = false }
 uuid = { version = "1.1", features = ["v4"] }
 
 # Optional dependencies (quanta)