fix: packages/common/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-IMMER-1540542

Author: snyk-bot

packages/common/package.json

@@ -60,7 +60,7 @@
     "error-polyfill": "^0.1.2",
     "humps": "CompuIves/humps",
     "image-extensions": "^1.1.0",
-    "immer": "^3.2.0",
+    "immer": "^9.0.6",
     "lodash": "^4.17.11",
     "markty-toml": "^0.0.9",
     "memoize-one": "^3.1.1",