fix: contracts/erc20/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-BRACES-6838727
- https://snyk.io/vuln/SNYK-JS-MICROMATCH-6838728

contracts/erc20/package.json

@@ -55,7 +55,7 @@
         "@0x/contracts-gen": "^2.0.10",
         "@0x/contracts-test-utils": "^5.3.4",
         "@0x/contracts-utils": "^4.5.1",
-        "@0x/dev-utils": "^3.3.0",
+        "@0x/dev-utils": "^5.0.0",
         "@0x/sol-compiler": "^4.1.1",
         "@0x/ts-doc-gen": "^0.0.22",
         "@0x/tslint-config": "^4.1.0",