Change the ghcn assim from 00z cycle to all 4 cycles.

parm/snow/obs/lists/gdas_snow_ghcn.yaml.j2

@@ -1,8 +1,8 @@
 observers:
 {% filter indent(width=2) %}
+{% include 'snow/obs/config/ghcn_snow.yaml.j2' %}
 {% set cycle = current_cycle | strftime("t%Hz") %}
 {% if cycle in ['t00z'] %}
 {% include 'snow/obs/config/ims_snow.yaml.j2' %}
-{% include 'snow/obs/config/ghcn_snow.yaml.j2' %}
 {% endif %}
 {% endfilter %}