Bump mobx from 6.5.0 to 6.6.0 (#5570)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sebastian Malton <sebastian@malton.name>

src/renderer/components/+namespaces/store.ts

@@ -114,7 +114,7 @@ export class NamespaceStore extends KubeObjectStore<Namespace, NamespaceApi> {
      * if user has given static list of namespaces let's not start watches
      * because watch adds stuff that's not wanted or will just fail
      */
-    if (this.context.cluster.accessibleNamespaces.length > 0) {
+    if ((this.context?.cluster.accessibleNamespaces.length ?? 0) > 0) {
       return noop;
     }