Update dependency core-js to ^3.3.4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
core-js	dependencies	patch	^3.3.3 -> ^3.3.4

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Release Notes

zloirock/core-js

v3.3.4

Compare Source

• Added a workaround of V8 deoptimization which causes serious performance degradation (~20x in my tests) of some RegExp-related methods like String#split, #​306
• Added a workaround of V8 deoptimization which causes serious performance degradation (up to 100x in my tests) of Array#splice and slightly Array#{ filter, map }, #​677
• Fixed work of fetch with polyfilled URLSearchParams, #​674
• Fixed an edge case of String#replaceAll with an empty search value
• Added compat data for Chrome 80
• package-lock.json no longer generated in libraries

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