Add dataclasses requirement to test_requirements.txt

cb22 · cb22 · commit 679cd541e30d · 2022-10-05T22:58:29.000+02:00
diff --git a/test_requirements.txt b/test_requirements.txt
@@ -6,3 +6,4 @@ requests
 packaging>=21.0
 dparse>=0.6.2
 ruamel.yaml>=0.17.21
+dataclasses==0.8; python_version=="3.6"
