fix: missing return statement in KeyStore.ts

Signed-off-by: rtriesscheijn <rtriesscheijn@bol.com>

plugins/auth-backend/src/identity/KeyStores.ts

@@ -76,7 +76,7 @@ export class KeyStores {
     }
 
     if (provider === 'static') {
-      await StaticKeyStore.fromConfig(config);
+      return await StaticKeyStore.fromConfig(config);
     }
 
     throw new Error(`Unknown KeyStore provider: ${provider}`);