Update CI workflow to use actions/setup-python@v5 and switch to uv for dependency installation and testing

Author: sreenathnair

.github/workflows/main.yml

@@ -17,18 +17,21 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
+    - name: Install uv
+      run: |
+        curl -LsSf https://astral.sh/uv/install.sh | sh
+        echo "$HOME/.cargo/bin" >> $GITHUB_PATH
     - name: Install dependencies
       run: |
-        pip install -r dev-requirements.txt
-        pip install -r requirements.txt
+        uv sync --extra dev
     - name: Run Tests
       env:
         ENV: DEV
       run: |
-        make test
+        uv run make test
     - name: Upload coverage to Codecov
       if: github.ref == 'refs/heads/master'
       uses: codecov/codecov-action@v1