Bump packaging from 20.7 to 20.8 (#664)

dependabot[bot] · web-flow · commit f4287fcef48e · 2020-12-23T10:13:00.000+01:00
diff --git a/requirements/requirements.txt b/requirements/requirements.txt
@@ -1,7 +1,7 @@
 boto3~=1.16.31
 cryptography==3.3.1
 marshmallow==3.9.1
-packaging==20.7
+packaging==20.8
 PyYAML>=5.1,<5.4
 requests==2.25.0
 unix-ar==0.2.1
