Update pluggy, attrs, and cffi requirements

Author: mdmintz

requirements.txt

@@ -10,8 +10,8 @@ chardet==3.0.4
 urllib3==1.25.6
 requests>=2.22.0
 selenium==3.141.0
-pluggy>=0.12.0
-attrs>=19.2.0
+pluggy>=0.13.0
+attrs>=19.3.0
 pytest>=4.6.6;python_version<"3"
 pytest>=5.2.1;python_version>="3"
 pytest-cov>=2.8.1
@@ -29,6 +29,7 @@ colorama>=0.4.1
 pymysql>=0.9.3
 pyotp>=2.3.0
 boto>=2.49.0
+cffi>=1.13.0
 tqdm>=4.36.1
 flake8>=3.7.8
 certifi>=2019.9.11

setup.py

@@ -93,8 +93,8 @@
         'urllib3==1.25.6',  # Must stay in sync with "requests"
         'requests>=2.22.0',
         'selenium==3.141.0',
-        'pluggy>=0.12.0',
-        'attrs>=19.2.0',
+        'pluggy>=0.13.0',
+        'attrs>=19.3.0',
         'pytest>=4.6.6;python_version<"3"',  # For Python 2 compatibility
         'pytest>=5.2.1;python_version>="3"',
         'pytest-cov>=2.8.1',
@@ -112,6 +112,7 @@
         'pymysql>=0.9.3',
         'pyotp>=2.3.0',
         'boto>=2.49.0',
+        'cffi>=1.13.0',
         'tqdm>=4.36.1',
         'flake8>=3.7.8',
         'certifi>=2019.9.11',