Fix RHEL8 test by updating pip

Author: ktbarrett

.github/workflows/tests.yml

@@ -98,7 +98,7 @@ jobs:
         run: yum install -y python39-devel python39-pip python39-pip-wheel python39 git
       - uses: actions/checkout@v4
       - name: Install Testing Requirements
-        run: python3.9 -m pip install nox
+        run: python3.9 -m pip install --upgrade pip nox
       - name: Run Tests
         run: python3.9 -m nox -e tests
       # - name: Upload to codecov