FetchV2Request: make getWantedRefs public

There are valid cases where a hook, invoked by ProtocolV2Hook
and probably implemented in a different package, is interested
in knowing the wanted refs in the request.

Increase visibility to public in the wanted-ref method.

Change-Id: I5da085ac7af4c396c1cb85e630f40a57fc70b33e
Signed-off-by: Ivan Frade <ifrade@google.com>

org.eclipse.jgit/src/org/eclipse/jgit/transport/FetchV2Request.java

@@ -98,9 +98,11 @@ public final class FetchV2Request extends FetchRequest {
 
 	/**
 	 * @return list of references received in "want-ref" lines
+	 *
+	 * @since 5.3
 	 */
 	@NonNull
-	List<String> getWantedRefs() {
+	public List<String> getWantedRefs() {
 		return wantedRefs;
 	}