chore: add name and slug to Codecov action

Author: s-celles

.github/workflows/CI.yml

@@ -32,9 +32,11 @@ jobs:
           coverage: ${{ matrix.os == 'ubuntu-latest' && matrix.version == '1' }}
       - uses: julia-actions/julia-processcoverage@v1
         if: matrix.os == 'ubuntu-latest' && matrix.version == '1'
-      - uses: codecov/codecov-action@v5
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v5
         if: matrix.os == 'ubuntu-latest' && matrix.version == '1'
         with:
           files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
+          slug: s-celles/MathJSON.jl
           fail_ci_if_error: false