Update escape-string-regexp requirement from ^1.0.5 to ^2.0.0

Updates the requirements on [escape-string-regexp](https://github.com/sindresorhus/escape-string-regexp) to permit the latest version.
- [Release notes](https://github.com/sindresorhus/escape-string-regexp/releases)
- [Commits](sindresorhus/escape-string-regexp@v1.0.5...v2.0.0)

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

Author: dependabot-preview[bot]

package.json

@@ -30,7 +30,7 @@
   "dependencies": {
     "bluebird": "^3.5.1",
     "chokidar": "^3.0.0",
-    "escape-string-regexp": "^1.0.5",
+    "escape-string-regexp": "^2.0.0",
     "graceful-fs": "^4.1.11"
   },
   "devDependencies": {