Merge branch '2.16'

Author: cowtowncoder

src/test/java/tools/jackson/databind/cfg/CacheProviderTest.java

@@ -19,6 +19,7 @@
  *
  * @since 2.16
  */
+@SuppressWarnings("serial")
 public class CacheProviderTest
 {
     static class RandomBean {

src/test/java/tools/jackson/databind/type/RecursiveWildcardTest.java

@@ -1,6 +1,7 @@
 package tools.jackson.databind.type;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
@@ -77,8 +78,6 @@ public void testDeserWildcard4118() throws Exception
     }
 
     private <T> List<T> _listOf(T elem) {
-        ArrayList<T> list = new ArrayList<>();
-        list.add(elem);
-        return list;
+        return Arrays.asList(elem);
     }
 }