api report updates for service token improvements

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/backend-plugin-api/api-report.md

@@ -55,6 +55,10 @@ export interface AuthService {
     credentials: BackstageCredentials,
     type: TType,
   ): credentials is BackstageCredentials<BackstagePrincipalTypes[TType]>;
+  // (undocumented)
+  listPublicServiceKeys(): Promise<{
+    keys: JsonObject[];
+  }>;
 }
 
 // @public (undocumented)

plugins/auth-node/api-report.md

@@ -648,8 +648,8 @@ export const tokenTypes: Readonly<{
   limitedUser: Readonly<{
     typParam: 'vnd.backstage.limited-user';
   }>;
-  service: Readonly<{
-    typParam: 'vnd.backstage.service';
+  plugin: Readonly<{
+    typParam: 'vnd.backstage.plugin';
   }>;
 }>;