Update @babel/parser to 7.12 (#9408)
* Install babel/parser 7.12
* Add tests for babel/babel#12161
* Add test for babel/babel#12076
* Add test for babel/babel#12085
* Add test for babel/babel#12108
* Add test for babel/babel#12120
* Add test for babel/babel#12054
* Add test for babel/babel#12061
* Add test babel/babel#12093
* Add test for babel/babel#12065
* Add test for babel/babel#12111
* Add test for babel/babel#12072
* Switch syntax-module-attributes to syntax-import-assertion
* Support "String import/export specifier"
* Remove tests for module-attributes
* Add changelog
* Update to 7.12.3
* Fix by linter
* Fix by spellchecker
* Add tests for module attributes to errors
* Add error test for module string name with import
* Remove TSTypeCastExpression
* Add tests for funny import-assertions
* Update snapshots|
* Add more tests
