rust: enable the bitcoin_hashes small-hash feature

This reduces the binary size by 2784 bytes.

Author: benma

src/rust/Cargo.lock

@@ -49,6 +49,10 @@ hmac = { version = "0.12.1", default-features = false, features = ["reset"] }
 
 miniscript = { version = "11.0.0", default-features = false, features = ["no-std"], optional = true }
 bitcoin = { version = "0.31.0", default-features = false, features = ["no-std"], optional = true }
+# We don't rely on this dep directly, the miniscript/bitcoin deps do. We list it here to enable the
+# small-hash feature to reduce the binary size, saving around 2784 bytes (as measured at time of
+# writing, this might fluctuate over time).
+bitcoin_hashes = { version = "0.13.0", default-features = false, features = ["small-hash"] }
 
 [dependencies.prost]
 # keep version in sync with tools/prost-build/Cargo.toml.