fix: add environment variable for Mapbox API key in deployment workflow

Author: JPugetGil

.github/workflows/deploy-pages.yml

@@ -41,4 +41,6 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v4
+        env:
+          VITE_MAPBOX_API_KEY: ${{ secrets.VITE_MAPBOX_API_KEY }}