Fix priority thresholds (#1203)

cumulus/scripts/ci/changelog/templates/high_priority.md.tera

@@ -22,14 +22,16 @@
 {%- if p >= 7 or host_fn_count > 0 -%}
     {%- set prio = "‼️ HIGH" -%}
     {%- set text = "This is a **high priority** release and you must upgrade as as soon as possible." -%}
-{%- elif p >= 5 -%}
+{%- elif p >= 3 -%}
     {%- set prio = "❗️ Medium" -%}
     {%- set text = "This is a medium priority release and you should upgrade in a timely manner." -%}
-{%- elif p >= 3 -%}
+{%- else -%}
     {%- set prio = "Low" -%}
     {%- set text = "This is a low priority release and you may upgrade at your convenience." -%}
 {%- endif -%}
 
+<!-- detected max prio is: {{p}} -->
+
 {%- if prio -%}
 {{prio}}: {{text}}
 {%- else -%}