Core-js version update

[yerassyl94]

warning react-digraph > html-react-parser > react-dom-core > react > fbjs > core-js@1.2.7: core-js@<3 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.

[ajbogh]

@yerassyl94 Please feel free to open a PR with the change. We appreciate the support and welcome your issue. We will leave this issue open until it can be addressed. Thanks!