Bump core-js from 3.17.2 to 3.35.1

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 3.17.2 to 3.35.1.
- [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/v3.35.1/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

@@ -47,7 +47,7 @@
     "bootstrap": "^4.6.0",
     "camelcase": "^6.2.0",
     "clipboard": "^2.0.8",
-    "core-js": "^3.17.2",
+    "core-js": "^3.35.1",
     "css-vars-ponyfill": "^2.4.7",
     "davclient.js": "git+https://github.com/owncloud/davclient.js.git#0.2.1",
     "debounce": "^1.2.1",