feat(ci): Enable PostreSQL extension pg_trgm (#1984)

Author: oskogstad

.azure/modules/postgreSql/create.bicep

@@ -141,13 +141,23 @@ resource postgres 'Microsoft.DBforPostgreSQL/flexibleServers@2024-08-01' = {
   tags: tags
 }
 
+resource enable_extensions 'Microsoft.DBforPostgreSQL/flexibleServers/configurations@2024-08-01' = {
+    parent: postgres
+    name: 'azure.extensions'
+    properties: {
+      value: 'PG_TRGM'
+      source: 'user-override'
+    }
+  }
+
 resource track_io_timing 'Microsoft.DBforPostgreSQL/flexibleServers/configurations@2024-08-01' = if (enableQueryPerformanceInsight) {
   parent: postgres
   name: 'track_io_timing'
   properties: {
     value: 'on'
     source: 'user-override'
   }
+  dependsOn: [enable_extensions]
 }
 
 resource pg_qs_query_capture_mode 'Microsoft.DBforPostgreSQL/flexibleServers/configurations@2024-08-01' = if (enableQueryPerformanceInsight) {