Bump actions/upload-artifact from 2 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v2...v4)

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

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

Author: dependabot[bot]

.github/workflows/main.yml

@@ -42,7 +42,7 @@ jobs:
       run: cd '${{ github.workspace }}' && zip -r ${{ env.EXTENSION_FILE_NAME }}${{ env.VERSION }}.mmip .
 
     - name: Upload artifact
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: extension
         path: ${{ github.workspace }}/${{ env.EXTENSION_FILE_NAME }}${{ env.VERSION }}.mmip