Bump pyyaml from 5.1.2 to 5.4 (#69)

dependabot[bot] · web-flow · commit de24f22ce613 · 2021-03-26T10:15:35.000+02:00
diff --git a/requirements.txt b/requirements.txt
@@ -31,7 +31,7 @@ pylint==2.6.0
 pyparsing==2.4.2
 pysodium==0.7.2
 pytz==2019.2
-PyYAML==5.1.2
+PyYAML==5.4
 readme-renderer==24.0
 requests==2.22.0
 requests-toolbelt==0.9.1
