Bump micromatch and gulp

Bumps [micromatch](https://github.com/micromatch/micromatch) to 4.0.8 and updates ancestor dependency [gulp](https://github.com/gulpjs/gulp). These dependencies need to be updated together.


Updates `micromatch` from 4.0.5 to 4.0.8
- [Release notes](https://github.com/micromatch/micromatch/releases)
- [Changelog](https://github.com/micromatch/micromatch/blob/master/CHANGELOG.md)
- [Commits](https://github.com/micromatch/micromatch/compare/4.0.5...4.0.8)

Updates `gulp` from 4.0.2 to 5.0.0
- [Release notes](https://github.com/gulpjs/gulp/releases)
- [Changelog](https://github.com/gulpjs/gulp/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gulpjs/gulp/compare/v4.0.2...v5.0.0)

---
updated-dependencies:
- dependency-name: micromatch
  dependency-type: indirect
- dependency-name: gulp
  dependency-type: direct:development
...

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

package.json

@@ -46,7 +46,7 @@
     "babel-preset-minify": "^0.5.2",
     "del": "^6.0.0",
     "fs-extra": "^11.1.0",
-    "gulp": "^4.0.2",
+    "gulp": "^5.0.0",
     "gulp-babel": "^8.0.0",
     "gulp-cached": "^1.1.1",
     "gulp-changed": "^4.0.3",