Microsoft.key vault dp 7.3 preview (Azure#11464)

* Update Swagger for key rotation

* Update api version

* Fixed build error

* Fixed model validation in keys

* Fixed model validation error in certificates

* Add new version 7.3-preview based on 7.2-preview

* Fixed lint error

* Update api version tag

* Revert changes

cSpell.json

@@ -319,6 +319,12 @@
                 "Regenerte"
             ]
         },
+        {
+            "filename": "**/specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/storage.json",
+            "words": [
+                "Regenerte"
+            ]
+        },
         {
             "filename": "**/specification/adhybridhealthservice/resource-manager/Microsoft.ADHybridHealthService/stable/2014-01-01/ADHybridHealthService.json",
             "words": [