CI: fix code coverage step

The code coverage currently
fails because this repository
does not pass any token, so
generate an OIDC token and use
that.

Author: pjonsson

.github/workflows/test.yml

@@ -13,7 +13,8 @@ on:
 jobs:
   integration-tests:
     runs-on: ubuntu-latest
-
+    permissions:
+      id-token: write
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
@@ -30,4 +31,5 @@ jobs:
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@18283e04ce6e62d37312384ff67231eb8fd56d24 # v5.4.3
         with:
+          use_oidc: true
           fail_ci_if_error: false