Update main.yml

Author: oxydonth

.github/workflows/main.yml

@@ -15,7 +15,7 @@ jobs:
         with:
           root_file: cv_eng.tex
       - name: Archive production artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: cv_current
           path: '*.pdf'