build(deps): bump core-js from 3.30.1 to 3.33.3

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 3.30.1 to 3.33.3.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zloirock/core-js/commits/v3.33.3/packages/core-js)

---
updated-dependencies:
- dependency-name: core-js
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -67,7 +67,7 @@
     "bootstrap-sass": "~3.4",
     "canvas-confetti": "^1.6.0",
     "codemirror": "5.65.0",
-    "core-js": "^3.21.1",
+    "core-js": "^3.33.3",
     "d3": "3.5.17",
     "es5-shim": "^4.5.12",
     "file-saver": "^2.0.5",