Add connect/v0.4 to ROUTER_SUPPORTED_SUPERGRAPH_FEATURES (#3366)

Author: benjamn

.changeset/perfect-kangaroos-yawn.md

@@ -0,0 +1,5 @@
+---
+"@apollo/federation-internals": patch
+---
+
+Allow connect/v0.4 in ROUTER_SUPPORTED_SUPERGRAPH_FEATURES.

internals-js/src/supergraphs.ts

@@ -49,6 +49,7 @@ export const ROUTER_SUPPORTED_SUPERGRAPH_FEATURES: Set<string> = new Set([
   'https://specs.apollo.dev/connect/v0.1',
   'https://specs.apollo.dev/connect/v0.2',
   'https://specs.apollo.dev/connect/v0.3',
+  'https://specs.apollo.dev/connect/v0.4',
   'https://specs.apollo.dev/cacheTag/v0.1',
 ]);