Update pyyaml to 6.0.1, otherwise alpine builds fail

Author: norbusan

poetry.lock

@@ -119,7 +119,7 @@ paypalrestsdk = "1.13.1"
 eventlet = "0.33.3"
 gevent = "22.10.1"
 greenlet = "1.1.3.post0" # Required for gevent
-pyyaml = "5.4.1"
+pyyaml = "6.0.1"
 sendgrid = "6.10.0"
 marshmallow = "2.21.0"
 marshmallow-jsonapi = "0.23.2"