chore(deps): update dev dependency microbundle to ^0.12.4 (#739)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package.json

@@ -36,7 +36,7 @@
     "jest-junit": "11.1.0",
     "jest-puppeteer": "4.4.0",
     "lint-staged": "10.4.0",
-    "microbundle": "^0.12.3",
+    "microbundle": "^0.12.4",
     "prettier": "2.1.2",
     "prettier-package-json": "2.1.3",
     "puppeteer": "5.3.1",