replace the regex crate with the fancy-regex crate (#6227)

crates/nu-json/Cargo.toml

@@ -13,11 +13,11 @@ preserve_order = ["linked-hash-map", "linked-hash-map/serde_impl"]
 default = ["preserve_order"]
 
 [dependencies]
-serde = "1.0"
-num-traits = "0.2.14"
-regex = "^1.0"
+fancy-regex = "0.10.0"
 lazy_static = "1"
 linked-hash-map = { version="0.5", optional=true }
+num-traits = "0.2.14"
+serde = "1.0"
 
 [dev-dependencies]
 nu-path = { path="../nu-path", version = "0.66.3" }

crates/nu-json/src/ser.rs

@@ -12,7 +12,7 @@ use serde::ser;
 
 //use super::util::ParseNumber;
 
-use regex::Regex;
+use fancy_regex::Regex;
 
 use lazy_static::lazy_static;
 

crates/nu-json/tests/main.rs

@@ -1,7 +1,7 @@
 // FIXME: re-enable tests
 /*
 use nu_json::Value;
-use regex::Regex;
+use fancy_regex::Regex;
 use std::fs;
 use std::io;
 use std::path::{Path, PathBuf};