Pin websockets library

Set upper bound for websockets until libjuju is compatible with newer
versions.

See juju/python-libjuju#1208

requirements.txt

@@ -35,3 +35,7 @@ sphinx
 sphinxcontrib-asyncio
 # https://github.com/go-macaroon-bakery/py-macaroon-bakery/issues/94
 macaroonbakery!=1.3.3
+
+# NOTE(freyes): Set upper bound for websockets until libjuju is compatible with
+# newer versions. See https://github.com/juju/python-libjuju/pull/1208
+websockets<13.0.0

setup.py

@@ -43,6 +43,9 @@
 
     # https://github.com/go-macaroon-bakery/py-macaroon-bakery/issues/94
     'macaroonbakery != 1.3.3',
+    # NOTE(freyes): Set upper bound for websockets until libjuju is compatible
+    # with newer versions. See https://github.com/juju/python-libjuju/pull/1208
+    'websockets<13.0.0',
 ]
 if os.environ.get("TEST_JUJU3"):
     install_require.append('juju')

test-requirements.txt

@@ -16,6 +16,10 @@ keystoneauth1
 oslo.config
 python-novaclient
 tenacity>8.2.0
+# NOTE(freyes): Set upper bound for websockets until libjuju is compatible with
+# newer versions. See https://github.com/juju/python-libjuju/pull/1208
+websockets<13.0.0
+
 # To force the installation of an specific version of libjuju use a constraints
 # file, e.g.: `env PIP_CONSTRAINTS=./constraints-juju31.txt tox -e func-target`
 juju