Let us try without exposing the REPO Token

Author: Diptorup Deb

.github/workflows/coverage.yaml

@@ -98,7 +98,7 @@ jobs:
       - name: Upload coverage data to coveralls.io
         run: |
           coveralls-lcov -v -n build_cmake/tests/dpctl.lcov > dpctl-c-api-coverage.json
-          COVERALLS_REPO_TOKEN=FgVbqpXYVkNP1AeOgZHvkRWuvVFExYkMU coveralls --merge=dpctl-c-api-coverage.json
+          coveralls --service=github --merge=dpctl-c-api-coverage.json
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           COVERALLS_PARALLEL: true