Update Python dependencies

Author: mdmintz

requirements.txt

@@ -12,7 +12,7 @@ certifi>=2020.12.5
 six==1.15.0
 nose==1.3.7
 ipdb==0.13.4;python_version<"3.6"
-ipdb==0.13.5;python_version>="3.6"
+ipdb==0.13.6;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"
@@ -55,7 +55,7 @@ cryptography==3.3.2;python_version>="3.6"
 pyopenssl==19.1.0;python_version<"3.6"
 pyopenssl==20.0.1;python_version>="3.6"
 pygments==2.5.2;python_version<"3.5"
-pygments==2.8.0;python_version>="3.5"
+pygments==2.8.1;python_version>="3.5"
 traitlets==4.3.3;python_version<"3.7"
 traitlets==5.0.5;python_version>="3.7"
 prompt-toolkit==1.0.18;python_version<"3.6"

setup.py

@@ -116,7 +116,7 @@
         'six==1.15.0',
         'nose==1.3.7',
         'ipdb==0.13.4;python_version<"3.6"',
-        'ipdb==0.13.5;python_version>="3.6"',
+        'ipdb==0.13.6;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"',
@@ -159,7 +159,7 @@
         'pyopenssl==19.1.0;python_version<"3.6"',
         'pyopenssl==20.0.1;python_version>="3.6"',
         'pygments==2.5.2;python_version<"3.5"',
-        'pygments==2.8.0;python_version>="3.5"',
+        'pygments==2.8.1;python_version>="3.5"',
         'traitlets==4.3.3;python_version<"3.7"',
         'traitlets==5.0.5;python_version>="3.7"',
         'prompt-toolkit==1.0.18;python_version<"3.6"',