Drop unused regex dependency

Author: paolobarbolini

Cargo.toml

@@ -47,7 +47,6 @@ proc-macro2 = "1.0.56"
 quote = "1.0.21"
 r2d2 = "0.8.9"
 rand = "0.8.3"
-regex = "1.6"
 rust_decimal = "1.14"
 serde = "1.0"
 serde_json = "1.0"

crates/duckdb/Cargo.toml

@@ -67,7 +67,6 @@ num-integer = { workspace = true }
 [dev-dependencies]
 doc-comment = { workspace = true }
 tempfile = { workspace = true }
-regex = { workspace = true }
 uuid = { workspace = true, features = ["v4"] }
 unicase = { workspace = true }
 rand = { workspace = true }