Bump core-js from 2.6.4 to 2.6.5

Bumps [core-js](https://github.com/zloirock/core-js) from 2.6.4 to 2.6.5.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/v2.6.5/CHANGELOG.md)
- [Commits](https://github.com/zloirock/core-js/compare/v2.6.4...v2.6.5)
Signed-off-by: dependabot[bot] <support@dependabot.com>

yarn.lock

@@ -2704,9 +2704,9 @@ copy-props@^2.0.1:
     is-plain-object "^2.0.1"
 
 core-js@^2.2.0, core-js@^2.4.0, core-js@^2.5.7:
-  version "2.6.4"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.4.tgz#b8897c062c4d769dd30a0ac5c73976c47f92ea0d"
-  integrity sha512-05qQ5hXShcqGkPZpXEFLIpxayZscVD2kuMBZewxiIPPEagukO4mqgPA9CWhUvFBJfy3ODdK2p9xyHh7FTU9/7A==
+  version "2.6.5"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.5.tgz#44bc8d249e7fb2ff5d00e0341a7ffb94fbf67895"
+  integrity sha512-klh/kDpwX8hryYL14M9w/xei6vrv6sE8gTHDG7/T/+SEovB/G4ejwcfE/CBzO6Edsu+OETZMZ3wcX/EjUkrl5A==
 
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"