fix(react-email): Missing sharp warning when running email dev

Author: gabrielmfern

.changeset/empty-pugs-tap.md

@@ -0,0 +1,5 @@
+---
+"react-email": patch
+---
+
+Fix sharp warning when running `email dev`

packages/react-email/src/cli/utils/preview/start-dev-server.ts

@@ -129,6 +129,12 @@ export const startDevServer = async (
   const app = next({
     // passing in env here does not get the environment variables there
     dev: isDev,
+    conf: {
+      images: {
+        // This is to avoid the warning with sharp
+        unoptimized: true
+      }
+    },
     hostname: 'localhost',
     port,
     dir: previewServerLocation,