feat(ci): python-deps workflow to install specific packages (#28901)

This reduces the number of packages that get installed by brew and it prevents upgrading packages.

Author: armenzg

.github/workflows/python-deps.yml

@@ -28,9 +28,11 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Install prerequisites
-        # brew can be finicky but it does not always means that the rest of the job will fail
+        env:
+          HOMEBREW_NO_AUTO_UPDATE: on
+        # Necessary packages for some Python deps
         run: |
-          make prerequisites
+          brew install libxmlsec1
 
       - name: Setup Python
         uses: ./.github/actions/setup-python