chore(deps): update actions/upload-artifact action to v6

Author: renovate[bot]

.github/workflows/build.yml

@@ -42,6 +42,6 @@ jobs:
       - run: mvn -B package
 
       - name: Upload a Build Artifact
-        uses: actions/upload-artifact@v3.1.0
+        uses: actions/upload-artifact@v6.0.0
         with:
           path: /home/runner/work/LeonGunWarNeo/LeonGunWarNeo/target/