Update file(s) "/.github" from "ZigRazor/CXXGraph"

Author: ZigRazor

.github/workflows/Code_Coverage.yml

@@ -137,7 +137,7 @@ jobs:
 
       # ── Upload to Codecov ─────────────────────────────────────────────
       - name: Upload to Codecov
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           token:            ${{ secrets.CODECOV_TOKEN }}
           files:            build/coverage.info