build(deps-dev): bump proxyquire from 2.1.1 to 2.1.3

Bumps [proxyquire](https://github.com/thlorenz/proxyquire) from 2.1.1 to 2.1.3.
- [Release notes](https://github.com/thlorenz/proxyquire/releases)
- [Commits](thlorenz/proxyquire@v2.1.1...v2.1.3)

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

package.json

@@ -48,7 +48,7 @@
     "joi": "^14.3.1",
     "mocha": "^6.2.0",
     "nyc": "^14.1.1",
-    "proxyquire": "^2.1.1"
+    "proxyquire": "^2.1.3"
   },
   "dependencies": {
     "cheerio": "^1.0.0-rc.3",