fix: HTTP/1.1 requests with truncated kernel versions

Closes #1087

Author: MIchaelMainer

src/msgraph_core/middleware/telemetry.py

@@ -115,7 +115,7 @@ def _add_host_os_header(self, request) -> None:
         """
         system = platform.system()
         version = platform.version()
-        host_os = f'{system} {version}'
+        host_os = f'{system} {version}'.strip()
         request.headers.update({'HostOs': host_os})
 
     def _add_runtime_environment_header(self, request) -> None: