[ci] release (alpha) (#11787)

* [ci] release (alpha)

* Update packages/astro/CHANGELOG.md

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

* links to existing experimental docs instead of ones that don't exist yet!

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Matthew Phillips <matthew@skypack.dev>
Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

packages/adapters/node/CHANGELOG.md

@@ -1,5 +1,28 @@
 # @astrojs/node
 
+## 9.0.0-alpha.1
+
+### Major Changes
+
+- [#11679](https://github.com/withastro/astro/pull/11679) [`ea71b90`](https://github.com/withastro/astro/commit/ea71b90c9c08ddd1d3397c78e2e273fb799f7dbd) Thanks [@florian-lefebvre](https://github.com/florian-lefebvre)! - Adds stable support for `astro:env`
+
+- [#11770](https://github.com/withastro/astro/pull/11770) [`cfa6a47`](https://github.com/withastro/astro/commit/cfa6a47ac7a541f99fdad46a68d0cca6e5816cd5) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Removed support for the Squoosh image service. As the underlying library `libsquoosh` is no longer maintained, and the image service sees very little usage we have decided to remove it from Astro.
+
+  Our recommendation is to use the base Sharp image service, which is more powerful, faster, and more actively maintained.
+
+  ```diff
+  - import { squooshImageService } from "astro/config";
+  import { defineConfig } from "astro/config";
+
+  export default defineConfig({
+  -  image: {
+  -    service: squooshImageService()
+  -  }
+  });
+  ```
+
+  If you are using this service, and cannot migrate to the base Sharp image service, a third-party extraction of the previous service is available here: https://github.com/Princesseuh/astro-image-service-squoosh
+
 ## 9.0.0-alpha.0
 
 ### Patch Changes

packages/adapters/node/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@astrojs/node",
   "description": "Deploy your site to a Node.js server",
-  "version": "9.0.0-alpha.0",
+  "version": "9.0.0-alpha.1",
   "type": "module",
   "types": "./dist/index.d.ts",
   "author": "withastro",