style(asyncquery): change the ``httpx.AsyncClient`` type annotation to a string literal

diff --git a/dns/asyncquery.py b/dns/asyncquery.py
index 885b8bf5e9ea84e5028e91e32738e206e3e70310..f22cba688d27373806937cbb80f73bd9b544cae2 100644 (file)
--- a/dns/asyncquery.py
+++ b/dns/asyncquery.py
@@ -485,7 +485,7 @@ async def https(
     source_port: int = 0,
     one_rr_per_rrset: bool = False,
     ignore_trailing: bool = False,
-    client: Optional[httpx.AsyncClient] = None,
+    client: Optional["httpx.AsyncClient"] = None,
     path: str = "/dns-query",
     post: bool = True,
     verify: bool = True,