Bump regex from 1.9.3 to 1.9.4 (#930)

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Author: dependabot[bot]

Cargo.lock

@@ -27,7 +27,7 @@ include = [
 
 [dependencies]
 pyo3 = { version = "0.19.2", features = ["generate-import-lib", "num-bigint"] }
-regex = "1.9.3"
+regex = "1.9.4"
 strum = { version = "0.25.0", features = ["derive"] }
 strum_macros = "0.25.2"
 serde_json = {version = "1.0.105", features = ["arbitrary_precision", "preserve_order"]}