Fixed a bug where the azureDevOps.token was not truly optional

Signed-off-by: Andre Wanlin <awanlin@spotify.com>

.changeset/soft-files-smash.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-azure-devops-backend': patch
+---
+
+Fixed a bug where the `azureDevOps.token` was not truly optional

plugins/azure-devops-backend/config.d.ts

@@ -28,7 +28,7 @@ export interface Config {
      * @visibility secret
      * @deprecated Use `integrations.azure` instead, see {@link https://backstage.io/docs/integrations/azure/locations}
      */
-    token: string;
+    token?: string;
     /**
      * The organization of the given Azure instance
      */

plugins/azure-devops-backend/src/service/router.ts

@@ -59,7 +59,7 @@ export async function createRouter(
 ): Promise<express.Router> {
   const { logger, reader, config, permissions } = options;
 
-  if (config.getString('azureDevOps.token')) {
+  if (config.getOptionalString('azureDevOps.token')) {
     logger.warn(
       "The 'azureDevOps.token' has been deprecated, use 'integrations.azure' instead, for more details see: https://backstage.io/docs/integrations/azure/locations",
     );