Update setup_matlab.yml

Try to connect with Codecov updating setup_matlab.yml

Author: vpapanasta

.github/workflows/setup_matlab.yml

@@ -18,3 +18,8 @@ jobs:
       - uses: codecov/codecov-action@v4
         with:
           file: coverage.xml
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v4.0.1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: matlab-deep-learning/llms-with-matlab