ttcn3-bsc-test-io_uring: limit jenkins nodes again

Run this job only on jenkins nodes with a linux kernel of 6.1.x or
higher. The io_uring implementation consumes a lot more memory on e.g.
the 5.10.x kernel of host2, which causes osmo-bsc to run out of memory
in other places:

<0002> system_information.c:1641 bts 0: Error while generating SI4: Cannot allocate memory (-12)
<0002> bts_trx.c:505 Cannot generate SI4 for BTS 0: error <Cannot allocate memory>, most likely a problem with neighbor cell list generation

Related: OS#6405
Change-Id: Iddf2d47a641998860fd1ef615de976104667c5ab
---
M jobs/ttcn3-testsuites.yml
1 file changed, 19 insertions(+), 0 deletions(-)

diff --git a/jobs/ttcn3-testsuites.yml b/jobs/ttcn3-testsuites.yml
index 8a1f767..ac79f4d 100644
--- a/jobs/ttcn3-testsuites.yml
+++ b/jobs/ttcn3-testsuites.yml
@@ -223,6 +223,7 @@
       # With LIBOSMO_IO_BACKEND=IO_URING (OS#6357)
       - ttcn3-bsc-test-io_uring:
           timer: H 11 * * *
+          node: ttcn3_with_linux_6.1_or_higher  # Runs out of memory on others (OS#6405)
       - ttcn3-msc-test-io_uring:
           timer: H 11 * * *
       - ttcn3-hnbgw-test-io_uring:

