[tests] Use openwisp-utils master to fix black dependency import error

nemesifier · nemesifier · commit abc136b387c6 · 2022-03-29T15:09:25.000-04:00
diff --git a/requirements-test.txt b/requirements-test.txt
@@ -3,4 +3,4 @@ coveralls
 sphinx
 sphinx_rtd_theme
 # commit message style check
-openwisp-utils[qa]~=1.0.0
+openwisp-utils[qa] @ https://github.com/openwisp/openwisp-utils/tarball/master
