Bump core-js from 3.8.3 to 3.15.0

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 3.8.3 to 3.15.0.
- [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/v3.15.0/packages/core-js)

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

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

package.json

@@ -13,7 +13,7 @@
 	"dependencies": {
 		"axios": "^0.21.1",
 		"clipboard-polyfill": "^3.0.2",
-		"core-js": "^3.8.3",
+		"core-js": "^3.15.0",
 		"v-tooltip": "^2.1.2",
 		"vue": "^2.6.11",
 		"vue-ellipse-progress": "^1.1.1",