build(deps-dev): update @fisker/eslint-config requirement

Updates the requirements on [@fisker/eslint-config](https://github.com/fisker/shared-configs) to permit the latest version.
- [Release notes](https://github.com/fisker/shared-configs/releases)
- [Commits](https://github.com/fisker/shared-configs/compare/@fisker/eslint-config@1.2.17...@fisker/eslint-config@1.2.18)

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

package.json

@@ -19,7 +19,7 @@
     "@babel/preset-env": "7.6.0",
     "@commitlint/cli": "8.1.0",
     "@fisker/commitlint-config": "1.1.2",
-    "@fisker/eslint-config": "1.2.17",
+    "@fisker/eslint-config": "1.2.18",
     "@fisker/eslint-config-ava": "1.2.3",
     "@fisker/husky-config": "1.1.2",
     "@fisker/lint-staged-config": "1.0.5",