Update .gitlab-ci.yml

To correct the partition/qos on Izar, following some changes to the machine configuration

.gitlab-ci.yml

@@ -31,7 +31,7 @@ variables:
         path_suffix: ['']
 
       - environment: [izar]
-        slurm_options: ['-c 20 --gpus 1 -p izar']
+        slurm_options: ['-c 20 --gpus 1 -p gpu -q scitas']
         apptainer_options: ['--nv']
         stack: ["pinot-noir"]
         app_image: ["registry.c4science.ch/scitas-stack/rhel9-jed"]