Update dependency @babel/core to v7.12.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@babel/core (source)	devDependencies	patch	7.12.1 -> 7.12.3

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Release Notes

babel/babel

### [`v7.12.3`](https://togithub.com/babel/babel/blob/master/CHANGELOG.md#v7123-2020-10-16) [Compare Source](https://togithub.com/babel/babel/compare/v7.12.1...v7.12.3) ##### :bug: Bug Fix - `babel-helper-wrap-function`, `babel-plugin-proposal-async-generator-functions` - [#​12192](https://togithub.com/babel/babel/pull/12192) fix: properly wrap private class methods ([@​JLHwung](https://togithub.com/JLHwung)) - `babel-core` - [#​12200](https://togithub.com/babel/babel/pull/12200) Make `loadPartialConfig`'s options optional ([@​nicolo-ribaudo](https://togithub.com/nicolo-ribaudo)) - `babel-parser` - [#​12185](https://togithub.com/babel/babel/pull/12185) [ts] Disallow invalid type annotations in ExpressionStatements ([@​existentialism](https://togithub.com/existentialism)) ##### :house: Internal - Other - [#​12204](https://togithub.com/babel/babel/pull/12204) chore: update test262 tests ([@​JLHwung](https://togithub.com/JLHwung)) - `babel-parser` - [#​12203](https://togithub.com/babel/babel/pull/12203) test: add test case for babel-parser: fixtures/typescript/arrow-function/destructuring-with-annotation-newline ([@​Mongkii](https://togithub.com/Mongkii))

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[coveralls]

Coverage remained the same at 100.0% when pulling 3ea49d5c082e836cf518604636a457f2d9ef0018 on renovate/babel-monorepo into 4e4109328a3bac0f05d30d9e2d4f087ac54ba9a0 on master.