UploadPackTest: Add missing <> operator on instantiation of ArrayList

Change-Id: I348cbcd75252d7857ada843dc496d445ee1d62fb
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/UploadPackTest.java

@@ -1557,7 +1557,7 @@ public class UploadPackTest {
 			long depth, ObjectId... wants) throws Exception {
 		server.getConfig().setBoolean("uploadpack", null, "allowfilter", true);
 
-		List<String> input = new ArrayList();
+		List<String> input = new ArrayList<>();
 		input.add("command=fetch\n");
 		input.add(PacketLineIn.DELIM);
 		for (ObjectId want : wants) {