Update Python dependencies

Author: mdmintz

requirements.txt

@@ -12,15 +12,15 @@ certifi>=2020.12.5
 six==1.15.0
 nose==1.3.7
 ipdb==0.13.4;python_version<"3.6"
-ipdb==0.13.6;python_version>="3.6"
+ipdb==0.13.7;python_version>="3.6"
 parso==0.7.1;python_version<"3.6"
 parso==0.8.1;python_version>="3.6"
 jedi==0.17.2;python_version<"3.6"
 jedi==0.18.0;python_version>="3.6"
 idna==2.10
 chardet==3.0.4;python_version<"3.6"
 chardet==4.0.0;python_version>="3.6"
-urllib3==1.26.3
+urllib3==1.26.4
 requests==2.25.1
 selenium==3.141.0
 msedge-selenium-tools==3.141.3
@@ -66,7 +66,7 @@ ipython==7.21.0;python_version>="3.7"
 colorama==0.4.4
 pathlib2==2.3.5;python_version<"3.5"
 importlib-metadata==2.0.0;python_version<"3.6"
-virtualenv>=20.4.2
+virtualenv>=20.4.3
 pymysql==0.10.1;python_version<"3.6"
 pymysql==1.0.2;python_version>="3.6"
 brython==3.9.1

setup.py

@@ -117,15 +117,15 @@
         'six==1.15.0',
         'nose==1.3.7',
         'ipdb==0.13.4;python_version<"3.6"',
-        'ipdb==0.13.6;python_version>="3.6"',
+        'ipdb==0.13.7;python_version>="3.6"',
         'parso==0.7.1;python_version<"3.6"',
         'parso==0.8.1;python_version>="3.6"',
         'jedi==0.17.2;python_version<"3.6"',
         'jedi==0.18.0;python_version>="3.6"',
         'idna==2.10',  # Must stay in sync with "requests"
         'chardet==3.0.4;python_version<"3.6"',  # Stay in sync with "requests"
         'chardet==4.0.0;python_version>="3.6"',  # Stay in sync with "requests"
-        'urllib3==1.26.3',  # Must stay in sync with "requests"
+        'urllib3==1.26.4',  # Must stay in sync with "requests"
         'requests==2.25.1',
         'selenium==3.141.0',
         'msedge-selenium-tools==3.141.3',
@@ -171,7 +171,7 @@
         'colorama==0.4.4',
         'pathlib2==2.3.5;python_version<"3.5"',  # Sync with "virtualenv"
         'importlib-metadata==2.0.0;python_version<"3.6"',  # Sync "virtualenv"
-        'virtualenv>=20.4.2',  # Sync with importlib-metadata and pathlib2
+        'virtualenv>=20.4.3',  # Sync with importlib-metadata and pathlib2
         'pymysql==0.10.1;python_version<"3.6"',
         'pymysql==1.0.2;python_version>="3.6"',
         'brython==3.9.1',