Reduce logging for ResourceNotFoundException

[rstoyanchev]

Following the changes for #29491. The logs now show:

2023-07-13T15:25:07.622+01:00  WARN 26627 --- [nio-8080-exec-3] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.servlet.resource.NoResourceFoundException: No static resource apple-touch-icon-precomposed.png.]
2023-07-13T15:25:07.622+01:00  WARN 26627 --- [nio-8080-exec-2] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.servlet.resource.NoResourceFoundException: No static resource favicon.ico.]
2023-07-13T15:25:07.699+01:00  WARN 26627 --- [nio-8080-exec-4] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.servlet.resource.NoResourceFoundException: No static resource apple-touch-icon.png.]

We should minimize this message for NoResourceFoundException, minimizing to DEBUG level.

[2022Robo]

org.springframework.web.servlet.resource.NoResourceFoundException: No static resource favicon.ico.
at org.springframework.web.servlet.resource.ResourceHttpRequestHandler.handleRequest(ResourceHttpRequestHandler.java:585) ~[spring-webmvc-6.1.3.jar:6.1.3]
at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:52) ~[spring-webmvc-6.1.3.jar:6.1.3]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089) ~[spring-webmvc-6.1.3.jar:6.1.3]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979) ~[spring-webmvc-6.1.3.jar:6.1.3]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) ~[spring-webmvc-6.1.3.jar:6.1.3]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903) ~[spring-webmvc-6.1.3.jar:6.1.3]
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564) ~[tomcat-embed-core-10.1.18.jar:6.0]