fix: use correct flag on group add

Author: samrose

ansible-nix/tasks/setup-postgres.yml

@@ -33,7 +33,7 @@
 #     password: ''
 
 - name: create postgres user
-  shell: useradd -m -r -s /bin/bash -d /home/postgres postgres -G postgres,ssl-cert
+  shell: useradd -m -r -s /bin/bash -d /home/postgres postgres -g postgres,ssl-cert
   args:
     executable: /bin/bash
   become: yes

common-nix.vars.pkr.hcl

@@ -1 +1 @@
-postgres-version = "15.6.1.36-nix-staged"
+postgres-version = "15.6.1.37-nix-staged"