fix: url of postgrest download

Author: samrose

ansible/tasks/setup-postgrest.yml

@@ -48,7 +48,7 @@
 
 - name: PostgREST - download ubuntu binary archive (arm)
   get_url:
-    url: "https://github.com/PostgREST/postgrest/releases/download/v{{ postgrest_release }}/postgrest-v{{ postgrest_release }}-ubuntu-20.04-aarch64.tar.xz"
+    url: "https://github.com/PostgREST/postgrest/releases/download/v{{ postgrest_release }}/postgrest-v{{ postgrest_release }}-aarch64.tar.xz"
     dest: /tmp/postgrest.tar.xz
     checksum: "{{ postgrest_arm_release_checksum }}"
     timeout: 60