Reduce log level of LoggingExporter

The `info` level might lead to a lot of logs with automated
processes, that do not have any value. Because often `info`
is the default log level, we degrade this to `debug`.

scm-webapp/src/main/java/sonia/scm/trace/LoggingExporter.java

@@ -46,7 +46,7 @@ public final class LoggingExporter implements Exporter {
 
   @Inject
   LoggingExporter() {
-    this(LOG::info);
+    this(LOG::debug);
   }
 
   LoggingExporter(Consumer<String> logger) {