Bump google-closure-compiler from 20200112.0.0 to 20200204.0.0
Bump google-closure-compiler from 20200112.0.0 to 20200204.0.0

Bumps [google-closure-compiler](https://github.com/google/closure-compiler-npm) from 20200112.0.0 to 20200204.0.0.
- [Release notes](https://github.com/google/closure-compiler-npm/releases)
- [Commits](https://github.com/google/closure-compiler-npm/compare/v20200112.0.0...v20200204.0.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
wala/jsdelta,wala/jsdelta