Bump core-js from 3.8.0 to 3.8.1

Bumps [core-js](https://github.com/zloirock/core-js) from 3.8.0 to 3.8.1.
- [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/compare/v3.8.0...v3.8.1)

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

package.json

@@ -51,7 +51,7 @@
   "dependencies": {
     "blurhash": "^1.1.3",
     "classlist.js": "https://github.com/eligrey/classList.js/archive/1.2.20180112.tar.gz",
-    "core-js": "^3.8.0",
+    "core-js": "^3.8.1",
     "date-fns": "^2.16.1",
     "epubjs": "^0.3.85",
     "fast-text-encoding": "^1.0.3",