Bump proxyquire from 1.8.0 to 2.1.3

Bumps [proxyquire](https://github.com/thlorenz/proxyquire) from 1.8.0 to 2.1.3.
- [Release notes](https://github.com/thlorenz/proxyquire/releases)
- [Commits](thlorenz/proxyquire@v1.8.0...v2.1.3)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -47,6 +47,6 @@
     "eslint": "^7.8.1",
     "husky": "^4.2.5",
     "mocha": "^8.1.3",
-    "proxyquire": "^1.8.0"
+    "proxyquire": "^2.1.3"
   }
 }