build(deps): bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci.yml

@@ -138,7 +138,7 @@ jobs:
         run: cp bin/packages/${{ matrix.arch }}/packages_ci/*.ipk . || true
 
       - name: Store packages
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: "!startsWith(github.ref, 'refs/tags/v')"
         with:
           name: ${{ matrix.arch}}-${{ github.sha}}-packages
@@ -154,7 +154,7 @@ jobs:
           file_glob: true
 
       - name: Store logs
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.arch}}-${{ github.sha }}-logs
           path: logs/