Upgrade ruamel.yaml to 0.15.91 (#22965)

homeassistant/package_constraints.txt

@@ -12,7 +12,7 @@ python-slugify==1.2.6
 pytz>=2018.07
 pyyaml>=3.13,<4
 requests==2.21.0
-ruamel.yaml==0.15.89
+ruamel.yaml==0.15.91
 voluptuous==0.11.5
 voluptuous-serialize==2.1.0
 

requirements_all.txt

@@ -13,7 +13,7 @@ python-slugify==1.2.6
 pytz>=2018.07
 pyyaml>=3.13,<4
 requests==2.21.0
-ruamel.yaml==0.15.89
+ruamel.yaml==0.15.91
 voluptuous==0.11.5
 voluptuous-serialize==2.1.0
 

setup.py

@@ -47,7 +47,7 @@ REQUIRES = [
     'pytz>=2018.07',
     'pyyaml>=3.13,<4',
     'requests==2.21.0',
-    'ruamel.yaml==0.15.89',
+    'ruamel.yaml==0.15.91',
     'voluptuous==0.11.5',
     'voluptuous-serialize==2.1.0',
 ]