chore(deps-dev): bump acorn from 7.0.0 to 7.1.0

Bumps [acorn](https://github.com/acornjs/acorn) from 7.0.0 to 7.1.0.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/7.0.0...7.1.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

web3.js/package-lock.json

@@ -4267,9 +4267,9 @@
       }
     },
     "acorn": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.0.0.tgz",
-      "integrity": "sha512-PaF/MduxijYYt7unVGRuds1vBC9bFxbNf+VWqhOClfdgy7RlVkQqt610ig1/yxTgsDIfW1cWDel5EBbOy3jdtQ==",
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.0.tgz",
+      "integrity": "sha512-kL5CuoXA/dgxlBbVrflsflzQ3PAas7RYZB52NOm/6839iVYJgKMJ3cQJD+t2i5+qFa8h3MDpEOJiS64E8JLnSQ==",
       "dev": true
     },
     "acorn-globals": {