ensure create namespace

Signed-off-by: Mayank Shah <[email protected]>

.github/workflows/everest-pr-checks.yaml

@@ -49,6 +49,7 @@ jobs:
         # TODO: Add more tests
       - name: Run chart-testing (install)
         run: |
+          kubectl create namespace everest-system
           ct install --config .github/ct.yaml --charts=./charts/everest --namespace=everest-system
 
       - name: Build chart package