fix: upgrade eslint from 6.7.0 to 6.7.2

Snyk has created this PR to upgrade eslint from 6.7.0 to 6.7.2.

See this package in NPM:
https://www.npmjs.com/package/eslint

See this project in Snyk:
https://app.snyk.io/org/stephangerbeth/project/cbff12b5-9eac-45b3-a16e-68856fb25d72?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -51,7 +51,7 @@
     "babelrc-rollup": "^3.0.0",
     "chai": "^4.2.0",
     "cross-env": "^6.0.3",
-    "eslint": "^6.7.0",
+    "eslint": "^6.7.2",
     "eslint-config-airbnb": "^18.0.1",
     "eslint-plugin-import": "^2.18.2",
     "eslint-plugin-jsx-a11y": "^6.2.3",