Revert "chore(deps): bump astro from 4.16.18 to 5.15.9 in /dev-packages/e2e-tests/test-applications/cloudflare-astro (#18259)"

This reverts commit 5503d96.

Author: Lms24

dev-packages/e2e-tests/test-applications/cloudflare-astro/package.json

@@ -19,7 +19,7 @@
   "dependencies": {
     "@astrojs/cloudflare": "8.1.0",
     "@sentry/astro": "latest || *",
-    "astro": "5.15.9"
+    "astro": "4.16.18"
   },
   "devDependencies": {
     "@astrojs/internal-helpers": "0.4.1"