fix: upgrade eslint from 7.25.0 to 7.30.0 (#210)

Snyk has created this PR to upgrade eslint from 7.25.0 to 7.30.0.

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

See this project in Snyk:
https://app.snyk.io/org/robot-inventor/project/621d5594-f4e8-418c-a276-aff44280d00b?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -26,7 +26,7 @@
     "@material/mwc-radio": "^0.21.0",
     "@material/mwc-snackbar": "^0.21.0",
     "@material/mwc-switch": "^0.21.0",
-    "eslint": "^7.25.0",
+    "eslint": "^7.30.0",
     "stylelint": "^13.13.1",
     "stylelint-config-recommended-scss": "^4.2.0",
     "stylelint-scss": "^3.19.0",