build: build using different ecommerce releases

Build this repository against different ecommerce repositories and
releases.

.github/workflows/ci.yml

@@ -11,7 +11,17 @@ jobs:
   ci:
     name: Run tests and linting
     runs-on: ubuntu-latest
-
+
+    strategy:
+      matrix:
+        include:
+          - ecommerce_repository: fccn/ecommerce
+            ecommerce_ref: nau/nutmeg.master
+            pip_constraint: pip<24.1
+          # - ecommerce_repository: openedx/ecommerce
+          #   ecommerce_ref: nau/redwood.master
+          #   pip_constraint: 
+
     steps:
       - name: Checkout Ecommerce NAU extensions
         uses: actions/checkout@v4
@@ -23,9 +33,9 @@ jobs:
         uses: actions/checkout@v4
         with:
           # Repository name with owner
-          repository: fccn/ecommerce
+          repository: ${{ matrix.ecommerce_repository }}
           # Change the branch to checkout
-          ref: nau/nutmeg.master
+          ref: ${{ matrix.ecommerce_ref }}
           # Relative path to place the repository
           path: ecommerce
 
@@ -36,11 +46,12 @@ jobs:
           cache: 'pip' # caching pip dependencies
 
       - name: Install specific pip version
+        if: "${{ matrix.pip_constraint != '' }}"
         # Requested celery==4.4.7 from https://files.......... (from -r ecommerce/requirements/dev.txt (line 73)) has invalid metadata: Expected matching RIGHT_PARENTHESIS for LEFT_PARENTHESIS, after version specifier
         #     pytz (>dev)
         #         ~^
         # Please use pip<24.1 if you need to use this version.
-        run: pip install "pip<24.1"
+        run: pip install "${{ matrix.pip_constraint }}"
 
       - name: Install ecommerce pip requirements
         run: pip install -r ecommerce/requirements/dev.txt