Add and se bootstrap overwrite flag to true

- With Persistent data stores, a deploy again will error out spiceDB, we need to set the overwrite flag to "true"

deploy/kessel-relations-deploy.yaml

@@ -26,6 +26,9 @@ objects:
                     name: spicedb-schema
                 containers:
                 - name: spicedb
+                  env:
+                   - name: "SPICEDB_DATASTORE_BOOTSTRAP_OVERWRITE"
+                     value: "true"
                   volumeMounts:
                   - name: bootstrap
                     mountPath: /etc/bootstrap