fix(deps): update dependency @backstage/plugin-auth-backend to v0.27.1 [security]

Signed-off-by: Renovate Bot <bot@renovateapp.com>

Author: backstage-goalie[bot]

workspaces/azure-sites/plugins/azure-sites-backend/package.json

@@ -58,7 +58,7 @@
   "devDependencies": {
     "@backstage/backend-defaults": "^0.15.1",
     "@backstage/cli": "^0.35.3",
-    "@backstage/plugin-auth-backend": "^0.26.0",
+    "@backstage/plugin-auth-backend": "^0.27.0",
     "@backstage/plugin-auth-backend-module-guest-provider": "^0.2.15",
     "@types/supertest": "^7.0.0"
   },

workspaces/azure-sites/yarn.lock

@@ -57,7 +57,7 @@
   },
   "devDependencies": {
     "@backstage/cli": "^0.33.1",
-    "@backstage/plugin-auth-backend": "^0.25.2",
+    "@backstage/plugin-auth-backend": "^0.27.0",
     "@backstage/plugin-auth-backend-module-guest-provider": "^0.2.10",
     "@backstage/plugin-catalog-backend": "^3.0.0",
     "@types/nodemailer": "8.0.0",