Trying to fix the GitHub actions bug.

.github/workflows/ci.yml

@@ -39,6 +39,8 @@ jobs:
       - uses: actions/checkout@v4
 
       - uses: actions/setup-python@v5
+        env:
+          PIP_DISABLE_PIP_VERSION_CHECK: 1
         with:
           # This allows the matrix to specify just the major.minor version while still
           # expanding it to get the latest patch version including alpha releases.
@@ -53,6 +55,7 @@ jobs:
 
       - name: Setup environment
         run: |
+          python -m pip install --upgrade pip
           python -m pip install build
 
       - name: Build sdist and wheel
@@ -133,6 +136,7 @@ jobs:
           python --version --version
           # make sure we test the installed code
           cp -R repo/tests/ tests/
+          python -m pip install --upgrade pip
           python -m pip install -r tests/requirements.txt
           python -m pip install ./dist/*.whl
           # show the directory contents for diagnostics