[CI] [GHA] Increase timeout for the Nvidia job (openvinotoolkit#31208)

### Tickets:
 - *163912*

Author: akashchi

.github/workflows/ubuntu_22.yml

@@ -464,7 +464,7 @@ jobs:
   NVIDIA_Plugin:
     name: NVIDIA plugin
     needs: [ Docker, Build, Smart_CI ]
-    timeout-minutes: 15
+    timeout-minutes: 30
     defaults:
       run:
         shell: bash