Fix malformed URL in KeyVault (#5129)

* Fix malformed URL in KeyVault

* Update changelog

---------

Co-authored-by: Anton Kolesnyk <antkmsft@users.noreply.github.com>

sdk/keyvault/assets.json

@@ -2,5 +2,5 @@
   "AssetsRepo": "Azure/azure-sdk-assets",
   "AssetsRepoPrefixPath": "cpp",
   "TagPrefix": "cpp/keyvault",
-  "Tag": "cpp/keyvault_b7bbda693f"
+  "Tag": "cpp/keyvault_51f59d3347"
 }

sdk/keyvault/azure-security-keyvault-keys/CHANGELOG.md

@@ -11,6 +11,7 @@
 ### Other Changes
 
 - Fixed GCC 13 compilation error. (A community contribution, courtesy of _[adamdebreceni](https://github.com/adamdebreceni)_)
+- Use well-formed URL for the HTTP request made in `KeyClient::GetRandomBytes()`.
 
 ### Acknowledgments
 

sdk/keyvault/azure-security-keyvault-keys/src/key_client.cpp

@@ -462,7 +462,7 @@ Azure::Response<GetRandomBytesResult> KeyClient::GetRandomBytes(
       reinterpret_cast<const uint8_t*>(payload.data()), payload.size());
 
   // Request and settings
-  auto request = CreateRequest(HttpMethod::Post, {"/rng"}, &payloadStream);
+  auto request = CreateRequest(HttpMethod::Post, {"rng"}, &payloadStream);
   request.SetHeader(HttpShared::ContentType, HttpShared::ApplicationJson);
 
   // Send and parse response