Upgrade: Bump gulp-brotli from 1.2.2 to 2.0.2

Bumps [gulp-brotli](https://github.com/seznam/gulp-brotli) from 1.2.2 to 2.0.2.
- [Release notes](https://github.com/seznam/gulp-brotli/releases)
- [Commits](https://github.com/seznam/gulp-brotli/commits/v2.0.2)

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

Author: dependabot-preview[bot]

package.json

@@ -22,7 +22,7 @@
     "cross-env": "^6.0.0",
     "eslint": "^6.4.0",
     "gulp": "^4.0.2",
-    "gulp-brotli": "^1.2.2",
+    "gulp-brotli": "^2.0.2",
     "gulp-changed": "^4.0.1",
     "gulp-clean-css": "^4.2.0",
     "gulp-cli": "^2.2.0",