Update git submodules

* Update bifrost from branch 'master'
  to 88797af9b1f021b6a9eb4f6f36765e1646c96ffc
  - Merge "Switch IPA ramdisk to debian DIB based"
  - Switch IPA ramdisk to debian DIB based

    The debian based IPA ramdisk is smaller and has a more recent
    default python version (3.13) compared to CentOS Stream 9.

    Change-Id: Ief1568bf545c937194ccd8df51dd417be494a190
    Signed-off-by: Riccardo Pittau <elfosardo@gmail.com>

diff --git a/bifrost b/bifrost
index 297d2872953e43d88eaba8084125db8aa6e60c65..88797af9b1f021b6a9eb4f6f36765e1646c96ffc 160000 (submodule)
--- a/bifrost
+++ b/bifrost
@@ -1 +1 @@
-Subproject commit 297d2872953e43d88eaba8084125db8aa6e60c65
+Subproject commit 88797af9b1f021b6a9eb4f6f36765e1646c96ffc