Add v7.4.2 to CHANGELOG.md [skip ci]

CHANGELOG.md

@@ -18,6 +18,25 @@ See [Babylon's CHANGELOG](packages/babylon/CHANGELOG.md) for the Babylon pre-7.0
 <!-- DO NOT CHANGE THESE COMMENTS - See .github/actions/trigger-github-release/update-changelog.js -->
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+## v7.4.2 (2019-03-21)
+
+#### :bug: Bug Fix
+* `babel-parser`
+  * [#9725](https://github.com/babel/babel/pull/9725) Modules might be in loose mode when checking for undecl exports ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+  * [#9719](https://github.com/babel/babel/pull/9719) Fix scope checks with enabled flow plugin ([@danez](https://github.com/danez))
+* `babel-helpers`, `babel-plugin-transform-named-capturing-groups-regex`
+  * [#9726](https://github.com/babel/babel/pull/9726) Fix typo in wrapRegExp helper ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-preset-env`
+  * [#9724](https://github.com/babel/babel/pull/9724) Closes [#9713](https://github.com/babel/babel/issues/9713) ([@zloirock](https://github.com/zloirock))
+
+#### :nail_care: Polish
+* `babel-preset-env`
+  * [#9732](https://github.com/babel/babel/pull/9732) Mark the core-js warning as such ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+  * [#9716](https://github.com/babel/babel/pull/9716) Tweak preset-env corejs/useBuiltIns warning and error messages ([@existentialism](https://github.com/existentialism))
+
+#### :house: Internal
+* [#9718](https://github.com/babel/babel/pull/9718) Bump Babel deps ([@existentialism](https://github.com/existentialism))
+
 ## v7.4.1 (2019-03-20)
 
 #### :bug: Bug Fix