feat: use jq from nixpkgs

Author: samrose

ansible/tasks/stage2-setup-postgres.yml

@@ -98,7 +98,7 @@
 - name: Install jq from nix binary cache
   become: yes
   shell: |
-    sudo -u postgres bash -c ". /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh && nix profile install github:supabase/postgres/{{ git_commit_sha }}#jq"
+    sudo -u postgres bash -c ". /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh && nix profile install nixpkgs#jq"
   when: stage2_nix
 
 - name: Set ownership and permissions for /etc/ssl/private