chore(deps): downgrade actions/upload-artifact and actions/download-artifact to v3

.gitea/workflows/gitea-ci.yaml

@@ -24,7 +24,7 @@ jobs:
       - run: go mod download
       - run: CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o manage-servers .
 
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v3
         with:
           name: manage-servers-binary
           path: manage-servers
@@ -45,7 +45,7 @@ jobs:
           echo "${{ secrets.DOCKER_PASSWORD }}" | docker login git.hnrx.net \
             --username "${{ secrets.DOCKER_USERNAME }}" --password-stdin
 
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v3
         with:
           name: manage-servers-binary
           path: .