Upgrade tox to 4.0.1 and pin versions for all CI pip dependencies

Author: ramosbugs

.github/workflows/ci.yaml

@@ -37,7 +37,7 @@ jobs:
         id: install
         run: |
           python -m pip install --upgrade pip
-          pip install tox
+          pip install tox==4.0.1
 
       - name: Typecheck
         run: tox -e mypy
@@ -53,7 +53,7 @@ jobs:
       - name: Build PyPI package
         if: ${{ always() && steps.install.outcome == 'success' }}
         run: |
-          pip install build twine
+          pip install build==0.9.0 twine==4.0.2
           python -m build
 
   pytest_integration_tests:
@@ -116,12 +116,12 @@ jobs:
       - name: Install tox
         run: |
           python -m pip install --upgrade pip
-          pip install tox
+          pip install tox==4.0.1
 
       - name: Test
         run: |
           UNFLAKABLE_API_KEY=${{ secrets.UNFLAKABLE_API_KEY }} \
-          TOX_TESTENV_PASSENV=UNFLAKABLE_API_KEY tox -e ${{ matrix.tox_env }} -- \
+          tox -e ${{ matrix.tox_env }} --override testenv.pass_env=UNFLAKABLE_API_KEY -- \
             --enable-unflakable \
             --test-suite-id 2AT4xgduQdwkVKSaO0qJ2Dqm2JY \
             -s \
@@ -146,7 +146,7 @@ jobs:
       - name: Install build dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install build twine
+          pip install build==0.9.0 twine==4.0.2
 
       - name: Build package
         run: |

tox.ini

@@ -1,7 +1,6 @@
 # For more information about tox, see https://tox.readthedocs.io/en/latest/
 [tox]
 envlist = py37-pytest{62,70,71},py38-pytest{62,70,71},py39-pytest{62,70,71},py310-pytest{62,70,71},flake8,mypy,pycodestyle
-isolated_build = True
 
 [testenv]
 extras = dev