Revert "fix(deps): update dependency react-email-2.1.7-canary.2 to v4 (#2169)"

This reverts commit e1f5c1b.

Author: gabrielmfern

benchmarks/preview-server/package.json

@@ -17,7 +17,7 @@
   },
   "dependencies": {
     "react-email": "workspace:*",
-    "react-email-2.1.7-canary.2": "npm:react-email@4.0.7",
+    "react-email-2.1.7-canary.2": "npm:react-email@2.1.7-canary.2",
     "tinybench": "3.1.0"
   },
   "devDependencies": {