Lock file maintenance (#8469)

package.json

@@ -297,6 +297,7 @@
     "@babel/preset-flow": "^7.0.0",
     "@babel/preset-react": "^7.0.0",
     "@babel/register": "^7.0.0",
+    "@emotion/core": "^10.0.16",
     "@loadable/babel-plugin": "^5.0.1",
     "@loadable/webpack-plugin": "^5.2.1",
     "@storybook/addon-info": "^5.1.9",
@@ -325,7 +326,7 @@
     "emotion-theming": "^10.0.10",
     "enzyme": "3.10.0",
     "enzyme-adapter-react-16": "^1.5.0",
-    "eslint": "^6.0.0",
+    "eslint": "6.1.0",
     "eslint-config-amo": "^1.14.0",
     "eslint-plugin-amo": "^1.9.1",
     "eslint-plugin-promise": "^4.0.0",

tests/unit/test_packageJson.js

@@ -18,7 +18,9 @@ const packageJson = JSON.parse(
 // observed in: https://github.com/mozilla/addons-frontend/pull/7603 and it is
 // likely due to this Enzyme patch: https://github.com/airbnb/enzyme/pull/2007
 
-const skipDevDeps = ['prettier', 'pretty-quick', 'enzyme'];
+// eslint: there is an issue with 6.2.0 and the `no-unused-vars` rule, see:
+// https://github.com/eslint/eslint/issues/12117
+const skipDevDeps = ['prettier', 'pretty-quick', 'enzyme', 'eslint'];
 
 describe(__filename, () => {
   Object.keys(packageJson.devDependencies).forEach((key) => {