chore(package.json): update package manager from pnpm to yarn

Author: thomasbnt

package.json

@@ -16,5 +16,5 @@
     "astro-matomo": "^1.7.0",
     "sharp": "^0.33.5"
   },
-  "packageManager": "[email protected]+sha512.73a29afa36a0d092ece5271de5177ecbf8318d454ecd701343131b8ebc0c1a91c487da46ab77c8e596d6acf1461e3594ced4becedf8921b074fbd8653ed7051c"
+  "packageManager": "[email protected]+sha1.ac34549e6aa8e7ead463a7407e1c7390f61a6610"
 }