build: bump sinon-chai from 3.1.0 to 3.2.0 (#253)

Bumps [sinon-chai](https://github.com/domenic/sinon-chai) from 3.1.0 to 3.2.0.
- [Release notes](https://github.com/domenic/sinon-chai/releases)
- [Commits](chaijs/sinon-chai@v3.1.0...v3.2.0)

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

package.json

@@ -49,7 +49,7 @@
     "nyc": "12.0.2",
     "precinct": "4.2.0",
     "sinon": "6.0.0",
-    "sinon-chai": "3.1.0",
+    "sinon-chai": "3.2.0",
     "source-map-support": "0.5.6",
     "test-exclude": "4.2.1",
     "yargs": "11.0.0"