squash: Update artifact action

Signed-off-by: Vitaliy Potyarkin <v.potyarkin@yadro.com>

.forgejo/workflows/build.yml

@@ -24,12 +24,13 @@ jobs:
             hugo-${{ runner.os }}
             hugo
 
-      - run: |
+      - name: make all
+        run: |
           git submodule sync
           rm -rf themes/dot-hugo
           make all
 
-      - uses: actions/upload-artifact@v3
+      - uses: https://code.forgejo.org/forgejo/upload-artifact@v4
         id: artifact-upload-step
         with:
           name: site