chore: use remote pgwire dependency from crates.io

Remove local path dependency on ../pgwire and use published version 0.38
from crates.io. The pgwire branch documentation is optional and the
feature implementation doesn't require any pgwire code changes.

Author: TwistingTwists

Cargo.toml

@@ -19,7 +19,7 @@ bytes = "1.11.1"
 chrono = { version = "0.4", features = ["std"] }
 datafusion = { version = "52" }
 futures = "0.3"
-pgwire = { path = "../pgwire", version = "0.38", default-features = false }
+pgwire = { version = "0.38", default-features = false }
 postgres-types = "0.2"
 rust_decimal = { version = "1.40", features = ["db-postgres"] }
 tokio = { version = "1", default-features = false }