Bump core-js from 3.6.5 to 3.15.2

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 3.6.5 to 3.15.2.
- [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/v3.15.2/packages/core-js)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -16,7 +16,7 @@
     "ansi-to-html": "^0.6.14",
     "axios": "^0.21.1",
     "bootstrap-vue": "^2.21.2",
-    "core-js": "^3.6.5",
+    "core-js": "^3.15.2",
     "corejs-typeahead": "^1.3.1",
     "jquery": "^3.5.0",
     "marked": "^2.0.0",