Cattrs 1.7.0 released by the end of May 2021 break lineage usage (apa…

…che#16173)

See apache#16172

For now we limit the cattrs to < 1.7.0

(cherry picked from commit 19eb7ef)

setup.cfg

@@ -83,7 +83,8 @@ install_requires =
     cached_property~=1.5;python_version<="3.7"
     # cattrs >= 1.1.0 dropped support for Python 3.6
     cattrs>=1.0, <1.1.0;python_version<="3.6"
-    cattrs~=1.1;python_version>"3.6"
+    # cattrs >= 1.7.0 break lineage - see https://github.com/apache/airflow/issues/16172
+    cattrs~=1.1, <1.7.0;python_version>"3.6"
     # Required by vendored-in connexion
     clickclick>=1.2
     colorlog>=4.0.2