chore: enforce InsertNewlineAtEOF in clang-format (#4343)

* style: insert newline at eof

* style: use `InsertNewlineAtEOF` in `clang-format`

* fix: use `clang-format-16`

* chore: update clang-format-lint-action to v0.16.2

---------

Co-authored-by: Debasish Biswas <debasishbsws.dev@gmail.com>

src/main/java/com/thealgorithms/datastructures/heaps/LeftistHeap.java

@@ -111,4 +111,4 @@ public class LeftistHeap {
         lst.add(n.element);
         in_order_aux(n.right, lst);
     }
-}
+}