Fix http requirements

Author: synesthesiam

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "wyoming"
-version = "1.6.1"
+version = "1.6.2"
 description = "Peer-to-peer protocol for voice assistants"
 readme = "README.md"
 requires-python = ">=3.8.1,<3.13"
@@ -62,6 +62,6 @@ zeroconf = [
     "zeroconf==0.88.0"
 ]
 http = [
-    "Flask==3.0.2",
+    "Flask[async]==3.0.2",
     "swagger-ui-py==23.9.23",
 ]