Bump actions/upload-artifact from 5 to 6 (#552)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

.github/workflows/MSER.yml

@@ -43,7 +43,7 @@ jobs:
         run: |
           Start-Process "${env:ProgramFiles(x86)}\AutoIt3\AutoIt3.exe" "`"${env:ProgramFiles(x86)}\AutoIt3\SciTE\AutoIt3Wrapper\AutoIt3Wrapper.au3`" /NoStatus /prod /in MSEdgeRedirect.au3" -NoNewWindow -Wait
           sha256sum -b MSEdgeRedirect*.exe > checksums.sha256
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: mser
           path: |