Bump @cypress/code-coverage from 3.11.0 to 3.12.1

Bumps [@cypress/code-coverage](https://github.com/cypress-io/code-coverage) from 3.11.0 to 3.12.1.
- [Release notes](https://github.com/cypress-io/code-coverage/releases)
- [Changelog](https://github.com/cypress-io/code-coverage/blob/master/.releaserc)
- [Commits](cypress-io/code-coverage@v3.11.0...v3.12.1)

---
updated-dependencies:
- dependency-name: "@cypress/code-coverage"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -13,7 +13,7 @@
   "license": "MIT",
   "author": "Marek Dědič",
   "devDependencies": {
-    "@cypress/code-coverage": "^3.11.0",
+    "@cypress/code-coverage": "^3.12.1",
     "@google/clasp": "^2.4.2",
     "@material/theme": "^13.0.0",
     "@smui/button": "^6.1.4",