fix django version installation in CI matrix

Author: bckohan

.github/workflows/test.yml

@@ -63,6 +63,7 @@ jobs:
     - name: Install enum-properties
       run: |
         poetry install -E properties
+        poetry run pip install -U "Django~=${{ matrix.django-version }}"
     - name: Unit Tests w/ enum-properties
       run: |
         poetry run pytest --cov-fail-under=30
@@ -72,18 +73,21 @@ jobs:
     - name: Install djangorestframework
       run: |
         poetry install -E djangorestframework
+        poetry run pip install -U "Django~=${{ matrix.django-version }}"
     - name: Run Unit Tests w/ djangorestframework
       run: |
         poetry run pytest --cov-fail-under=30
     - name: Install django-filters
       run: |
         poetry install -E filters
+        poetry run pip install -U "Django~=${{ matrix.django-version }}"
     - name: Run Unit Tests w/ django-filter
       run: |
         poetry run pytest --cov-fail-under=30
     - name: Install all deps
       run: |
         poetry install -E all
+        poetry run pip install -U "Django~=${{ matrix.django-version }}"
     - name: Run Full Unit Tests
       run: |
         poetry run pytest