SOLR-14475: Fix deprecation warnings resulting from upgrading commons cli to 1.4

gradle/defaults-java.gradle

@@ -33,6 +33,7 @@ allprojects {
         "-Xdoclint:-missing",
         "-Xdoclint:-accessibility",
         "-proc:none",  // proc:none was added because of LOG4J2-1925 / JDK-8186647
+        "-Xmaxwarns", "10000",
       ]
     }
   }

solr/core/src/java/org/apache/solr/cloud/autoscaling/sim/SimScenario.java

@@ -1109,7 +1109,7 @@ public class SimScenario implements AutoCloseable {
   }
 
   @Override
-  public void close() throws Exception {
+  public void close() throws IOException {
     if (cluster != null) {
       cluster.close();
       cluster = null;