Relax YAML version requirements

Only depend on saneyaml.

Signed-off-by: Philippe Ombredanne <[email protected]>

Author: pombredanne

setup.py

@@ -24,7 +24,7 @@ def read(*names, **kwargs):
 
 setup(
     name='aboutcode-toolkit',
-    version='5.1.0',
+    version='5.2.0',
     license='Apache-2.0',
     description=(
         'AboutCode-toolkit is a tool to document the provenance (origin and license) of '
@@ -74,7 +74,6 @@ def read(*names, **kwargs):
         "backports.csv ; python_version<'3.6'",
 
         # required by saneyaml
-        'PyYAML >= 3.11, <=3.13',
         'saneyaml',
 
         'boolean.py >= 3.5, < 4.0',