Add Astro as a peerDependency (#5806)

* Add Astro as a peerDependency

* Add changeset

* Update .changeset/thin-seahorses-worry.md

Co-authored-by: Bjorn Lu <bjornlu.dev@gmail.com>

Co-authored-by: Bjorn Lu <bjornlu.dev@gmail.com>

Author: matthewp

packages/integrations/cloudflare/package.json

@@ -38,7 +38,7 @@
     "tiny-glob": "^0.2.9"
   },
   "peerDependencies": {
-    "astro": "^2.0.0-beta.0"
+    "astro": "workspace:^2.0.0-beta.0"
   },
   "devDependencies": {
     "astro": "workspace:*",