scripts: quarantine: add sample.matter.template.smp_dfu.old_ec

Regression.

Signed-off-by: Piotr Kosycarz <[email protected]>

Author: nordic-piks

scripts/quarantine.yaml

@@ -81,3 +81,9 @@
   platforms:
     - [email protected]/nrf54h20/cpuapp
   comment: "https://nordicsemi.atlassian.net/browse/NCSDK-31463"
+
+- scenarios:
+    - sample.matter.template.smp_dfu.old_ec
+  platforms:
+    - nrf54l15dk/nrf54l15/cpuapp
+  comment: "https://nordicsemi.atlassian.net/browse/NCSDK-35078"