Update Python dependencies

Author: mdmintz

requirements.txt

@@ -30,7 +30,7 @@ py==1.10.0;python_version>="3.5"
 pytest==4.6.11;python_version<"3.5"
 pytest==6.1.2;python_version>="3.5" and python_version<"3.6"
 pytest==6.2.1;python_version>="3.6"
-pytest-cov==2.11.0
+pytest-cov==2.11.1
 pytest-forked==1.3.0
 pytest-html==1.22.1;python_version<"3.6"
 pytest-html==2.0.1;python_version>="3.6"
@@ -56,7 +56,7 @@ pygments==2.7.4;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"
-prompt-toolkit==3.0.10;python_version>="3.6"
+prompt-toolkit==3.0.11;python_version>="3.6"
 ipython==5.10.0;python_version<"3.5"
 ipython==6.5.0;python_version>="3.5" and python_version<"3.6"
 ipython==7.16.1;python_version>="3.6" and python_version<"3.7"

setup.py

@@ -134,7 +134,7 @@
         'pytest==4.6.11;python_version<"3.5"',
         'pytest==6.1.2;python_version>="3.5" and python_version<"3.6"',
         'pytest==6.2.1;python_version>="3.6"',
-        'pytest-cov==2.11.0',
+        'pytest-cov==2.11.1',
         'pytest-forked==1.3.0',
         'pytest-html==1.22.1;python_version<"3.6"',
         'pytest-html==2.0.1;python_version>="3.6"',
@@ -161,7 +161,7 @@
         'traitlets==5.0.5;python_version>="3.7"',
         'ipython==5.10.0;python_version<"3.5"',
         'prompt-toolkit==1.0.18;python_version<"3.6"',
-        'prompt-toolkit==3.0.10;python_version>="3.6"',
+        'prompt-toolkit==3.0.11;python_version>="3.6"',
         'ipython==6.5.0;python_version>="3.5" and python_version<"3.6"',
         'ipython==7.16.1;python_version>="3.6" and python_version<"3.7"',
         'ipython==7.19.0;python_version>="3.7"',