fix(argocd): add null file reference for stac-queryables in montandon-eoapi configuration

Author: emmanuelmathot

applications/argocd/staging/applications/montandon-eoapi.yaml

@@ -89,6 +89,7 @@ spec:
             queryables:
               # configMap
               - name: "stac-queryables.json"
+                file: null
                 configMapRef:
                   name: montandon-eoapi-stac-queryables
                   key: stac_queryables.json