workflows/coco-stability: increase run tests timeout

300 minutes timeout is not enough for stability tests to finsih
as they currently configured to run 60m, ~10m, 270m, respectively,
kubernetes, soak and stressng. If I can do math correctly the sum
is 340m. But given that soak tests doesn't run with fixed timeout,
let's add 10m, so 350m will be the new timeout of the job step.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>

.github/workflows/run-kata-coco-stability-tests.yaml

@@ -136,7 +136,7 @@ jobs:
         run: bash tests/integration/kubernetes/gha-run.sh install-kbs-client
 
       - name: Run stability tests
-        timeout-minutes: 300
+        timeout-minutes: 350
         run: bash tests/stability/gha-stability-run.sh run-tests
 
       - name: Delete AKS cluster