LU-18721 kernel: update SLES15 SP6 [6.4.0-150600.23.38.1]

LU-18721 kernel: update SLES15 SP6 [6.4.0-150600.23.38.1]

Update SLES15 SP6 kernel to 6.4.0-150600.23.38.1 for Lustre client.

Test-Parameters: trivial mdtcount=4 mdscount=2 \
  clientdistro=sles15sp6 testlist=sanity

Test-Parameters: optional mdtcount=4 mdscount=2 \
  clientdistro=sles15sp6 testgroup=full-dne-part-1

Test-Parameters: optional mdtcount=4 mdscount=2 \
  clientdistro=sles15sp6 testgroup=full-dne-part-2

Test-Parameters: optional mdtcount=4 mdscount=2 \
  clientdistro=sles15sp6 testgroup=full-dne-part-3

Change-Id: I56a4c37f2316c9180d07b8633db4334f59e09fce
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/58080
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Reviewed-by: Alex Deiter <adeiter@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>