Upgrade to newer Python pip

.github/workflows/ci.yaml

@@ -56,7 +56,7 @@ jobs:
         run: |
           python -m venv venv
           . venv/bin/activate
-          pip install -U "pip<20.3" setuptools
+          pip install -U "pip>=21.0" setuptools
           pip install -r requirements.txt -r requirements_test.txt
       - name: Generate partial pre-commit restore key
         id: generate-pre-commit-key
@@ -580,7 +580,7 @@ jobs:
 
           python -m venv venv
           . venv/bin/activate
-          pip install -U "pip<20.3" setuptools wheel
+          pip install -U "pip>=21.0" setuptools wheel
           pip install -r requirements_all.txt
           pip install -r requirements_test.txt
           pip install -e .

homeassistant/package_constraints.txt

@@ -22,7 +22,7 @@ ifaddr==0.1.7
 jinja2==3.0.3
 paho-mqtt==1.6.1
 pillow==8.2.0
-pip>=8.0.3,<20.3
+pip>=21.0
 pyserial==3.5
 python-slugify==4.0.1
 pyudev==0.22.0

requirements.txt

@@ -16,7 +16,7 @@ ifaddr==0.1.7
 jinja2==3.0.3
 PyJWT==2.1.0
 cryptography==35.0.0
-pip>=8.0.3,<20.3
+pip>=21.0
 python-slugify==4.0.1
 pyyaml==6.0
 requests==2.26.0

setup.py

@@ -48,7 +48,7 @@
     "PyJWT==2.1.0",
     # PyJWT has loose dependency. We want the latest one.
     "cryptography==35.0.0",
-    "pip>=8.0.3,<20.3",
+    "pip>=21.0",
     "python-slugify==4.0.1",
     "pyyaml==6.0",
     "requests==2.26.0",

tox.ini

@@ -6,7 +6,7 @@ ignore_basepython_conflict = True
 [testenv]
 basepython = {env:PYTHON3_PATH:python3}
 # pip version duplicated in homeassistant/package_constraints.txt
-pip_version = pip>=8.0.3,<20.3
+pip_version = pip>=21.0
 commands =
      {envpython} -X dev -bb -m pytest --timeout=9 --durations=10 -n auto --dist=loadfile -qq -o console_output_style=count -p no:sugar {posargs}
      {toxinidir}/script/check_dirty