build(deps): bump actions/upload-artifact from 6 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Distcheck
         run: make distcheck
       - name: Upload artifact
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: tarball
           path: |
@@ -156,7 +156,7 @@ jobs:
         shell: cmd
         run: 7z l ${{env.release_name}}.zip
       # - name: Upload artifact
-      #   uses: actions/upload-artifact@v6
+      #   uses: actions/upload-artifact@v7
       #   with:
       #     name: ${{env.release_name}}
       #     path: |