Bump actions/upload-artifact from 3 to 4 (#1796)

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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/main.yml

@@ -74,14 +74,14 @@ jobs:
           IS_PRE_RELEASE: ${{ startsWith(github.ref, 'refs/tags/v') && endsWith(github.ref, '-pre') }}
 
       - name: Upload the vsix built on Linux
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: ${{ matrix.os == 'ubuntu-latest' && matrix.type == 'native' && ! startsWith(github.ref, 'refs/tags/v') }}
         with:
           path: emacs-mcx*.vsix
           name: emacs-mcx
 
       - name: Upload the vsix built on Linux (when pushed with a version tag)
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: ${{ matrix.os == 'ubuntu-latest' && matrix.type == 'native' && startsWith(github.ref, 'refs/tags/v') }}
         with:
           path: emacs-mcx*.vsix