fix: pin werkzeug<2.4, ignore deprecation warnings

Our Publisher API involves passing a `werkzeug.urls.URL` instance to
`Publisher.publish`.  As this is an API assumed by custom publishers
implemented by Lektor plugins out in the wild, we can not simply
change the API.

PR lektor#1143 — in the master branch — implements one approach to updating
the API in a backward-compatible manner, but it is rather involved.

For the sake of the 3.3.x branch, for now we pin werkzeug<2.4 and
leave the Publisher API as it is.

setup.cfg

@@ -51,7 +51,7 @@ install_requires =
     requests
     setuptools>=45.2
     watchdog
-    Werkzeug<3
+    Werkzeug<2.4
 
 [options.extras_require]
 ipython =

tests/test_deploy.py

@@ -9,6 +9,9 @@
 from lektor.publisher import RsyncPublisher
 
 
+pytestmark = pytest.mark.filterwarnings(r"ignore:'werkzeug\.urls:DeprecationWarning")
+
+
 def test_get_server(env):
     server = env.load_config().get_server("production")
     assert server.name == "Production"

tests/test_publisher.py

@@ -42,6 +42,7 @@ def test_Command_triggers_no_warnings():
     which("rsync") is None, reason="rsync is not available on this system"
 )
 @pytest.mark.parametrize("delete", ["yes", "no"])
+@pytest.mark.filterwarnings(r"ignore:'werkzeug\.urls:DeprecationWarning")
 def test_RsyncPublisher_integration(env, tmp_path, delete):
     # Integration test of local rsync deployment
     # Ensures that RsyncPublisher can successfully invoke rsync