Revert "build(deps): bump libc from 0.2.164 to 0.2.165 (#3793)" (#3806)

This reverts commit ada1d66.

#### Problem

libc v0.2.165 was yanked, which makes master builds tough to use with
other projects.

#### Summary of changes

Revert the bump and go back to v0.2.164.

Author: joncinque

Cargo.lock

@@ -337,7 +337,7 @@ jsonrpc-ipc-server = "18.0.0"
 jsonrpc-pubsub = "18.0.0"
 lazy-lru = "0.1.3"
 lazy_static = "1.5.0"
-libc = "0.2.165"
+libc = "0.2.164"
 libloading = "0.7.4"
 libsecp256k1 = { version = "0.6.0", default-features = false, features = [
     "std",