Update Python dependencies

Author: mdmintz

requirements.txt

@@ -1,8 +1,9 @@
-pip>=20.3.3
+pip>=20.3.4;python_version<"3.6"
+pip>=21.0;python_version>="3.6"
 packaging>=20.8
 setuptools>=44.1.1;python_version<"3.5"
 setuptools>=50.3.2;python_version>="3.5" and python_version<"3.6"
-setuptools>=51.3.3;python_version>="3.6"
+setuptools>=52.0.0;python_version>="3.6"
 setuptools-scm>=5.0.1
 wheel>=0.36.2
 attrs>=20.3.0
@@ -57,7 +58,7 @@ 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==3.0.11;python_version>="3.6"
+prompt-toolkit==3.0.13;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"
@@ -77,7 +78,7 @@ toml==0.10.2
 Pillow==6.2.2;python_version<"3.5"
 Pillow==7.2.0;python_version>="3.5" and python_version<"3.6"
 Pillow==8.1.0;python_version>="3.6"
-rich==9.8.2;python_version>="3.6" and python_version<"4.0"
+rich==9.9.0;python_version>="3.6" and python_version<"4.0"
 zipp==1.2.0;python_version<"3.6"
 zipp==3.4.0;python_version>="3.6"
 flake8==3.7.9;python_version<"3.5"

setup.py

@@ -102,11 +102,12 @@
     ],
     python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*',
     install_requires=[
-        'pip>=20.3.3',
+        'pip>=20.3.4;python_version<"3.6"',
+        'pip>=21.0;python_version>="3.6"',
         'packaging>=20.8',
         'setuptools>=44.1.1;python_version<"3.5"',
         'setuptools>=50.3.2;python_version>="3.5" and python_version<"3.6"',
-        'setuptools>=51.3.3;python_version>="3.6"',
+        'setuptools>=52.0.0;python_version>="3.6"',
         'setuptools-scm>=5.0.1',
         'wheel>=0.36.2',
         'attrs>=20.3.0',
@@ -162,7 +163,7 @@
         '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==3.0.11;python_version>="3.6"',
+        'prompt-toolkit==3.0.13;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"',
@@ -181,7 +182,7 @@
         'Pillow==6.2.2;python_version<"3.5"',
         'Pillow==7.2.0;python_version>="3.5" and python_version<"3.6"',
         'Pillow==8.1.0;python_version>="3.6"',
-        'rich==9.8.2;python_version>="3.6" and python_version<"4.0"',
+        'rich==9.9.0;python_version>="3.6" and python_version<"4.0"',
         'zipp==1.2.0;python_version<"3.6"',
         'zipp==3.4.0;python_version>="3.6"',
         'flake8==3.7.9;python_version<"3.5"',