ci: upload coverage report directly

Author: proost

.github/workflows/code_coverage.yml

@@ -37,7 +37,8 @@ jobs:
       - name: Generate coverage .info
         run: cmake --build build --target coverage_report
       - name: Post to Coveralls
-        uses: coverallsapp/github-action@v2
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          path-to-lcov: build/lcov.info
+        run: |
+          curl -sL https://coveralls.io/coveralls-linux.tar.gz | tar -xz
+          ./coveralls report build/lcov.info
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}