fix: codecov uploads failing

codecov uploads are failing due to rate limiting
see: https://github.com/jazzband/django-oauth-toolkit/actions/runs/16092121891/job/45410281627#step:8:37
codecov/feedback#735 (comment) indicated I should try oidc

Author: dopry

.github/workflows/test.yml

@@ -6,6 +6,8 @@ jobs:
   test-package:
     name: Test Package (Python ${{ matrix.python-version }}, Django ${{ matrix.django-version }})
     runs-on: ubuntu-latest
+    permissions:
+      id-token: write # Required for Codecov OIDC token
     strategy:
       fail-fast: false
       matrix:
@@ -63,6 +65,7 @@ jobs:
       uses: codecov/codecov-action@v3
       with:
         name: Python ${{ matrix.python-version }}
+        use_oidc: true
 
   test-demo-rp:
     name: Test Demo Relying Party