update submodule to Proxmox-6.2.16-3

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

diff --git a/submodules/ubuntu-kernel b/submodules/ubuntu-kernel
index c2a75fefda9519475eccb85a4b737bab4116e17a..1e60c4f3601e8d00341d9a20756a742b90d68681 160000 (submodule)
--- a/submodules/ubuntu-kernel
+++ b/submodules/ubuntu-kernel
@@ -1 +1 @@
-Subproject commit c2a75fefda9519475eccb85a4b737bab4116e17a
+Subproject commit 1e60c4f3601e8d00341d9a20756a742b90d68681