build(deps): bump actions/upload-artifact in /.github/actions/build-nix

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.4.2 to 4.4.3.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@8448086...b4b15b8)

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

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

.github/actions/build-nix/action.yml

@@ -12,7 +12,7 @@ runs:
     shell: bash
   - run: nix run -L --inputs-from . 'nixpkgs#coreutils' -- --coreutils-prog=cp -RLv ./result '${{ inputs.package }}'
     shell: bash
-  - uses: actions/upload-artifact@84480863f228bb9747b473957fcc9e309aa96097 # v4.4.2
+  - uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
     with:
       name: ${{ inputs.package }}
       path: ${{ inputs.package }}