Update git submodules

* Update ironic from branch 'master'
  to 534e9ff6b833a006e3995cf8d5f7d80d1587c681
  - Merge "Support filtering portgroups by shard"
  - Support filtering portgroups by shard

    This was somehow missed during initial implementation. Adding ability to
    filter portgroup by shard. This was mostly vibe coded with claude, with
    me interupting to suggest better implementations when it did something
    silly. Tested manually by a human using fake drivers :).

    Closes-bug: #2134566
    Generated-by: Claude code (claude)
    Signed-off-by: Jay Faulkner <jay@jvf.cc>
    Change-Id: Ic67c02763c2d832f616dc4526e4be891d639b976

diff --git a/ironic b/ironic
index 3b4e3801a1070deacee04ae1eb830f70bebe3bd9..534e9ff6b833a006e3995cf8d5f7d80d1587c681 160000 (submodule)
--- a/ironic
+++ b/ironic
@@ -1 +1 @@
-Subproject commit 3b4e3801a1070deacee04ae1eb830f70bebe3bd9
+Subproject commit 534e9ff6b833a006e3995cf8d5f7d80d1587c681