Merge pull request #30 from common-workflow-language/dependabot/pip/ruamel-yaml-gte-0.12.4-and-lt-0.16.6

Update ruamel-yaml requirement from <=0.15.77,>=0.12.4 to >=0.12.4,<0.16.6

Author: mr-c

requirements.txt

@@ -1,2 +1,2 @@
 six
-ruamel.yaml>=0.12.4,<=0.15.77
+ruamel.yaml>=0.12.4,<0.16.6

setup.py

@@ -12,7 +12,7 @@
     long_description_content_type="text/markdown",
     license="MIT",
     keywords=["cwl"],
-    install_requires=["ruamel.yaml >= 0.12.4, <= 0.15.87"],
+    install_requires=["ruamel.yaml >= 0.12.4, < 0.16.6"],
     packages=["cwlgen"],
     classifiers=[
         "Development Status :: 4 - Beta",