move markdown dep into pylib

pylib/anki/BUILD.bazel

@@ -46,6 +46,7 @@ py_library(
         requirement("requests"),
         requirement("flask"),
         requirement("waitress"),
+        requirement("markdown"),
     ] + orjson_if_available(),
 )
 
@@ -79,6 +80,7 @@ py_wheel(
         "requests[socks]",
         "decorator",
         "protobuf",
+        "markdown",
         'orjson; platform_machine == "x86_64"',
         'psutil; sys_platform == "win32"',
         'distro; sys_platform != "darwin" and sys_platform != "win32"',

qt/aqt/BUILD.bazel

@@ -50,7 +50,6 @@ aqt_deps = [
     requirement("flask-cors"),
     requirement("waitress"),
     requirement("send2trash"),
-    requirement("markdown"),
     requirement("jsonschema"),
     "@pyqt5//:pkg",
 ] + select({
@@ -104,7 +103,6 @@ py_wheel(
         "beautifulsoup4",
         "requests",
         "send2trash",
-        "markdown",
         "jsonschema",
         "flask",
         "flask_cors",