Remove Python 2 dependency constraints

requirements/base.in

@@ -2,7 +2,7 @@ Click>=6.0
 Jinja2
 bs4
 cachecontrol
-defusedxml<0.6  # 0.6 drops Py3.4
+defusedxml
 entrypoints
 lazy-object-proxy
 lxml

requirements/base.txt

@@ -1,4 +1,4 @@
-# SHA1:37322c21156447708bed1f2f84fb4007fb40d526
+# SHA1:550ec72b1bf98d268a21ddba61ccf392ca131b69
 #
 # This file is autogenerated by pip-compile-multi
 # To update, run:
@@ -25,7 +25,7 @@ charset-normalizer==2.0.6
     # via requests
 click==8.0.3
     # via -r requirements/base.in
-defusedxml==0.5.0
+defusedxml==0.7.1
     # via -r requirements/base.in
 entrypoints==0.3
     # via -r requirements/base.in

requirements/dev.in

@@ -7,18 +7,17 @@ flake8
 mock
 pep8
 pip
-pytest<=4.6
+pytest
 pytest-cov
-pytest-mock < 3  # For pytest 4.6 support
+pytest-mock
 pytest-pep8
 tox
 watchdog
 wheel
 freezegun
 pip-compile-multi
 
-# for Python 2 compatibility
-Sphinx<2
-pylint<2,!=1.9.5  # 1.9.5 missing for 3.7, 2 unsupported by 2.7
-astroid<2
-more-itertools<=5
+Sphinx
+pylint
+astroid
+more-itertools

requirements/dev.txt

@@ -1,4 +1,4 @@
-# SHA1:249303ac339e6b174193b06c2f3499bd798639f9
+# SHA1:3c21be1f8f9845e223e4c767d2739431223a9585
 #
 # This file is autogenerated by pip-compile-multi
 # To update, run:
@@ -8,12 +8,10 @@
 -r base.txt
 alabaster==0.7.12
     # via sphinx
-astroid==1.6.6
+astroid==2.8.2
     # via
     #   -r requirements/dev.in
     #   pylint
-atomicwrites==1.4.0
-    # via pytest
 attrs==21.2.0
     # via pytest
 babel==2.9.1
@@ -46,6 +44,8 @@ freezegun==1.1.0
     # via -r requirements/dev.in
 imagesize==1.2.0
     # via sphinx
+iniconfig==1.1.1
+    # via pytest
 isort==5.9.3
     # via pylint
 mccabe==0.6.1
@@ -54,10 +54,8 @@ mccabe==0.6.1
     #   pylint
 mock==4.0.3
     # via -r requirements/dev.in
-more-itertools==5.0.0
-    # via
-    #   -r requirements/dev.in
-    #   pytest
+more-itertools==8.10.0
+    # via -r requirements/dev.in
 packaging==21.0
     # via
     #   pytest
@@ -74,8 +72,10 @@ pip-compile-multi==2.4.2
 pip-tools==6.3.1
     # via pip-compile-multi
 platformdirs==2.4.0
-    # via virtualenv
-pluggy==0.13.1
+    # via
+    #   pylint
+    #   virtualenv
+pluggy==1.0.0
     # via
     #   pytest
     #   tox
@@ -91,11 +91,11 @@ pyflakes==2.4.0
     # via flake8
 pygments==2.10.0
     # via sphinx
-pylint==1.9.4
+pylint==2.11.1
     # via -r requirements/dev.in
 pyparsing==2.4.7
     # via packaging
-pytest==4.6.0
+pytest==6.2.5
     # via
     #   -r requirements/dev.in
     #   pytest-cache
@@ -106,22 +106,33 @@ pytest-cache==1.0
     # via pytest-pep8
 pytest-cov==3.0.0
     # via -r requirements/dev.in
-pytest-mock==2.0.0
+pytest-mock==3.6.1
     # via -r requirements/dev.in
 pytest-pep8==1.0.6
     # via -r requirements/dev.in
 python-dateutil==2.8.2
     # via freezegun
 snowballstemmer==2.1.0
     # via sphinx
-sphinx==1.8.5
+sphinx==4.2.0
     # via -r requirements/dev.in
+sphinxcontrib-applehelp==1.0.2
+    # via sphinx
+sphinxcontrib-devhelp==1.0.2
+    # via sphinx
+sphinxcontrib-htmlhelp==2.0.0
+    # via sphinx
+sphinxcontrib-jsmath==1.0.1
+    # via sphinx
+sphinxcontrib-qthelp==1.0.3
+    # via sphinx
 sphinxcontrib-serializinghtml==1.1.5
-    # via sphinxcontrib-websupport
-sphinxcontrib-websupport==1.2.4
     # via sphinx
 toml==0.10.2
-    # via tox
+    # via
+    #   pylint
+    #   pytest
+    #   tox
 tomli==1.2.1
     # via
     #   coverage
@@ -130,17 +141,17 @@ toposort==1.7
     # via pip-compile-multi
 tox==3.24.4
     # via -r requirements/dev.in
+typed-ast==1.4.3
+    # via astroid
 virtualenv==20.8.1
     # via tox
 watchdog==2.1.6
     # via -r requirements/dev.in
-wcwidth==0.2.5
-    # via pytest
 wheel==0.37.0
     # via
     #   -r requirements/dev.in
     #   pip-tools
-wrapt==1.13.1
+wrapt==1.12.1
     # via astroid
 
 # The following packages are considered to be unsafe in a requirements file: