submodule: update to Ubuntu-5.11.0-14.15

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

diff --git a/submodules/ubuntu-hirsute b/submodules/ubuntu-hirsute
index e012fdfc5752ed2225e3b47bbbee106f99131458..e484dbf1052c597f8aae9ad87e71a4c8d2dec2b4 160000 (submodule)
--- a/submodules/ubuntu-hirsute
+++ b/submodules/ubuntu-hirsute
@@ -1 +1 @@
-Subproject commit e012fdfc5752ed2225e3b47bbbee106f99131458
+Subproject commit e484dbf1052c597f8aae9ad87e71a4c8d2dec2b4