Fix compilation of enum constructor in templates

Author: AB-xdev

modules/openapi-generator/src/main/resources/Java/libraries/resttemplate/ApiClient.mustache

@@ -95,7 +95,7 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
 
         protected final String separator;
 
-        protected CollectionFormat(String separator) {
+        CollectionFormat(String separator) {
             this.separator = separator;
         }
 

modules/openapi-generator/src/main/resources/Java/libraries/webclient/ApiClient.mustache

@@ -90,7 +90,7 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
         CSV(","), TSV("\t"), SSV(" "), PIPES("|"), MULTI(null);
 
         protected final String separator;
-        protected CollectionFormat(String separator) {
+        CollectionFormat(String separator) {
             this.separator = separator;
         }