Upgrade @azure/identity version

Consolidated `@azure/identity` uses onto the 3.2.1 version used by the integration plugin.

Version 3.2 and above unlocks support for Workload Identity.

Signed-off-by: Alex Crome <afscrome@users.noreply.github.com>

plugins/techdocs-node/package.json

@@ -44,7 +44,7 @@
     "@aws-sdk/lib-storage": "^3.350.0",
     "@aws-sdk/node-http-handler": "^3.350.0",
     "@aws-sdk/types": "^3.347.0",
-    "@azure/identity": "^2.1.0",
+    "@azure/identity": "^3.2.1",
     "@azure/storage-blob": "^12.5.0",
     "@backstage/backend-common": "workspace:^",
     "@backstage/catalog-model": "workspace:^",