fix(deps): bump core-js from 3.6.5 to 3.8.1

Bumps [core-js](https://github.com/zloirock/core-js) from 3.6.5 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/v3.6.5...v3.8.1)

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

package.json

@@ -13,7 +13,7 @@
   },
   "dependencies": {
     "nuxt-web3-provider": "^0.1.1",
-    "core-js": "^3.6.5",
+    "core-js": "^3.8.1",
     "gas-price-oracle": "^0.2.2",
     "node-sass": "^4.14.1",
     "nuxt": "^2.14.6",

yarn.lock

@@ -3218,10 +3218,10 @@ core-js@^2.6.5:
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.11.tgz#38831469f9922bded8ee21c9dc46985e0399308c"
   integrity sha512-5wjnpaT/3dV+XB4borEsnAYQchn00XSgTAWKDkEqv+K8KevjbzmofK6hfJ9TZIlpj2N0xQpazy7PiRQiWHqzWg==
 
-core-js@^3.6.5:
-  version "3.6.5"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.6.5.tgz#7395dc273af37fb2e50e9bd3d9fe841285231d1a"
-  integrity sha512-vZVEEwZoIsI+vPEuoF9Iqf5H7/M3eeQqWlQnYa8FSKKePuYTf5MWnxb5SDAzCa60b3JBRS5g9b+Dq7b1y/RCrA==
+core-js@^3.8.1:
+  version "3.8.1"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.8.1.tgz#f51523668ac8a294d1285c3b9db44025fda66d47"
+  integrity sha512-9Id2xHY1W7m8hCl8NkhQn5CufmF/WuR30BTRewvCXc1aZd3kMECwNZ69ndLbekKfakw9Rf2Xyc+QR6E7Gg+obg==
 
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"