unpin system-tests (back to @main)

Author: nccatoni

.github/workflows/system_tests.yml

@@ -29,12 +29,9 @@ jobs:
     needs:
       - build
     uses: DataDog/system-tests/.github/workflows/system-tests.yml@main
-    secrets:
-      DD_API_KEY: ${{ secrets.DD_API_KEY }}
-      TEST_OPTIMIZATION_API_KEY: ${{ secrets.TEST_OPTIMIZATION_API_KEY }}
     permissions:
       contents: read
-      packages: write
+      id-token: write
     with:
       library: python_lambda
       binaries_artifact: binaries