SONAR-11680 upgrade Tomcat to 8.5.37

build.gradle

         entry 'log4j-to-slf4j'
         entry 'log4j-core'
       }
-      dependencySet(group: 'org.apache.tomcat.embed', version: '8.5.23') {
+      dependencySet(group: 'org.apache.tomcat.embed', version: '8.5.37') {
         entry 'tomcat-embed-core'
         entry('tomcat-embed-jasper') {
           exclude 'org.eclipse.jdt.core.compiler:ecj'

server/sonar-server/src/main/java/org/sonar/server/app/TomcatContexts.java

 import java.io.File;
 import java.io.IOException;
 import java.util.Map;
-import javax.servlet.ServletException;
 import org.apache.catalina.core.StandardContext;
 import org.apache.catalina.startup.Tomcat;
 import org.apache.commons.io.FileUtils;
       // disable JSP and WebSocket support
       context.setContainerSciFilter("org.apache.tomcat.websocket.server.WsSci|org.apache.jasper.servlet.JasperInitializer");
       return context;
-    } catch (ServletException e) {
+    } catch (Exception e) {
       throw new IllegalStateException("Fail to configure webapp from " + dir, e);
     }
   }