quarantine: Add pdm loopback tests to quarantine for nrf7120

The test generally requires changes in the MDK which will come
with the next release of NCS for the GPPI driver. The AUXPLL's
also require a custom decimation ratio change to the driver.

Signed-off-by: David Jewsbury <[email protected]>

Author: Hi-Im-David

scripts/quarantine.yaml

@@ -112,3 +112,11 @@
   platforms:
     - [email protected]/nrf54ls05b/cpuapp
   comment: "https://nordicsemi.atlassian.net/browse/NCSDK-36650"
+
+- scenarios:
+    - drivers.audio.pdm_loopback.nrf7120.auxpll.44k1hz
+    - drivers.audio.pdm_loopback.nrf7120.auxpll.48khz
+    - drivers.audio.pdm_loopback.nrf7120.1280khz
+  platforms:
+    - nrf7120pdk/nrf7120/cpuapp
+  comment: "https://nordicsemi.atlassian.net/browse/NRFX-8621 GPPI changes also by NCS 3.2"