Fixed release function count

Author: craigtaverner

x-pack/plugin/src/yamlRestTest/resources/rest-api-spec/test/esql/60_usage.yml

@@ -225,7 +225,7 @@ setup:
   - gt: {esql.functions.to_long: $functions_to_long}
   - match: {esql.functions.coalesce: $functions_coalesce}
   - gt: {esql.functions.categorize: $functions_categorize}
-  - length: {esql.functions: 142} # check the "sister" test above for a likely update to the same esql.functions length check
+  - length: {esql.functions: 148} # check the "sister" test above for a likely update to the same esql.functions length check
 
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 took: