Bump chai from 4.3.4 to 4.3.7 in /src (#177)

Bumps [chai](https://github.com/chaijs/chai) from 4.3.4 to 4.3.7.
- [Release notes](https://github.com/chaijs/chai/releases)
- [Changelog](https://github.com/chaijs/chai/blob/4.x.x/History.md)
- [Commits](chaijs/chai@v4.3.4...v4.3.7)

---
updated-dependencies:
- dependency-name: chai
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/package-lock.json

@@ -23,7 +23,7 @@
     "winston": "^3.3.3"
   },
   "devDependencies": {
-    "chai": "^4.3.4",
+    "chai": "^4.3.7",
     "chai-http": "^4.3.0",
     "cross-env": "^7.0.3",
     "decache": "^4.6.1",