Bump babel-plugin-transform-remove-debugger from 6.8.5 to 6.9.4

Bumps [babel-plugin-transform-remove-debugger](https://github.com/babel/minify) from 6.8.5 to 6.9.4.
- [Release notes](https://github.com/babel/minify/releases)
- [Changelog](https://github.com/babel/minify/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/minify/compare/babel-plugin-transform-remove-debugger@6.8.5...babel-plugin-transform-remove-debugger@6.9.4)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Author: dependabot-support

package-lock.json

@@ -938,13 +938,9 @@ babel-plugin-transform-remove-console@^6.8.4, babel-plugin-transform-remove-cons
   version "6.9.4"
   resolved "https://registry.yarnpkg.com/babel-plugin-transform-remove-console/-/babel-plugin-transform-remove-console-6.9.4.tgz#b980360c067384e24b357a588d807d3c83527780"
 
-babel-plugin-transform-remove-debugger@^6.8.4:
-  version "6.8.4"
-  resolved "https://registry.yarnpkg.com/babel-plugin-transform-remove-debugger/-/babel-plugin-transform-remove-debugger-6.8.4.tgz#f85704a08adaa71b55d77005b5b94e9b9df21f6e"
-
-babel-plugin-transform-remove-debugger@^6.8.5:
-  version "6.8.5"
-  resolved "https://registry.yarnpkg.com/babel-plugin-transform-remove-debugger/-/babel-plugin-transform-remove-debugger-6.8.5.tgz#809584d412bf918f071fdf41e1fdb15ea89cdcd5"
+babel-plugin-transform-remove-debugger@^6.8.4, babel-plugin-transform-remove-debugger@^6.8.5:
+  version "6.9.4"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-remove-debugger/-/babel-plugin-transform-remove-debugger-6.9.4.tgz#42b727631c97978e1eb2d199a7aec84a18339ef2"
 
 babel-plugin-transform-remove-undefined@^0.1.2:
   version "0.1.2"