chore(deploy): pip freeze to a static file

similar to having the SHA, will help confirm changes and debug

.github/workflows/deploy.yml

@@ -22,8 +22,22 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Write commit SHA to file
-        run: echo "${{ github.sha }}" >> benefits/static/sha.txt
+      - uses: actions/setup-python@v4
+        with:
+          python-version-file: .github/workflows/.python-version
+          cache: pip
+          cache-dependency-path: "**/pyproject.toml"
+
+      - name: Install package in virtual env
+        run: |
+          python -m venv .venv
+          source .venv/bin/activate
+          pip install -e .
+
+      - name: Write app metadata to static files
+        run: |
+          echo "${{ github.sha }}" >> benefits/static/sha.txt
+          pip freeze >> benefits/static/requirements.txt
 
       - name: Docker Login to GitHub Container Registry
         uses: docker/login-action@v3