Update pytest-html to >= 1.20.0

Author: mdmintz

requirements.txt

@@ -10,7 +10,7 @@ requests==2.21.0
 urllib3==1.24.1
 pytest>=4.1.1
 pytest-cov>=2.6.1
-pytest-html>=1.19.0
+pytest-html>=1.20.0
 pytest-rerunfailures>=6.0
 pytest-xdist>=1.26.0
 parameterized==0.6.1

setup.py

@@ -63,7 +63,7 @@
         'urllib3==1.24.1',  # Keep this lib in sync with "requests"
         'pytest>=4.1.1',
         'pytest-cov>=2.6.1',
-        'pytest-html>=1.19.0',
+        'pytest-html>=1.20.0',
         'pytest-rerunfailures>=6.0',
         'pytest-xdist>=1.26.0',
         'parameterized==0.6.1',