Update upgrading.md

Author: sahibamittal

docs/getting-started/upgrading.md

@@ -23,6 +23,12 @@ Refer to the [kafka configuration reference] for details. Example of name change
     |:-----------------------------------------------------------|:----------------------------------------------------|
     | `alpine.kafka.processor.vuln.scan.result.processing.order` | `kafka.processor.vuln.scan.result.processing.order` |
 
+* All deprecated endpoints mentioned below were removed:
+    * POST `/api/v1/policy/{policyUuid}/tag/{tagName}`
+    * DELETE `/api/v1/policy/{policyUuid}/tag/{tagName}`
+    * GET `/api/v1/tag/{policyUuid}`
+    * GET `/api/v1/bom/token/{uuid}`
+
 [apiserver/#840]: https://github.com/DependencyTrack/hyades-apiserver/pull/840
 [apiserver/#888]: https://github.com/DependencyTrack/hyades-apiserver/pull/888
 [apiserver/#904]: https://github.com/DependencyTrack/hyades-apiserver/pull/904