Revert "swan-cern: Update gpu-operator chart values"

This reverts commit 78ed9cd.

The changes to the GPU operator are still not ready to be merged to
production, due to issues that were detected when deployed the new
version of the chart.

swan-cern/values.yaml

@@ -282,16 +282,15 @@ gpu-operator:
   driver:
     repository: registry.cern.ch/kubernetes
     image: nvidia-gpu-driver
-    version: "v550.54.15-6.8.4-200.fc39.x86_64"
+    version: "v550.54.15-6.6.13-200.fc39.x86_64"
     imagePullPolicy: Always
     manager:
       repository: registry.cern.ch/kubernetes
       version: v0.6.0
     licensingConfig:
       configMapName: "nvidia-grid-license"
-      nlsEnabled: false
-    nfd:
-      enabled: false
+    kernelModuleConfig:
+      name: kernel-module-params
   vgpuManager:
     repository: registry.cern.ch
     driverManager: