Bump geekyeggo/delete-artifact from 5 to 6

Bumps [geekyeggo/delete-artifact](https://github.com/geekyeggo/delete-artifact) from 5 to 6.
- [Release notes](https://github.com/geekyeggo/delete-artifact/releases)
- [Changelog](https://github.com/GeekyEggo/delete-artifact/blob/main/CHANGELOG.md)
- [Commits](https://github.com/geekyeggo/delete-artifact/compare/v5...v6)

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

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

.github/workflows/build_all.yml

@@ -136,7 +136,7 @@ jobs:
           files: "ctest_results.xml"
       - name: Delete Test Artifact
         if: success()
-        uses: geekyeggo/delete-artifact@v5
+        uses: geekyeggo/delete-artifact@v6
         with:
           name: ${{ github.sha }}-tests
   flatpak:

.github/workflows/build_orca.yml

@@ -155,7 +155,7 @@ jobs:
 
       - name: Delete intermediate per-arch artifacts
         if: runner.os == 'macOS' && inputs.macos-combine-only
-        uses: geekyeggo/delete-artifact@v5
+        uses: geekyeggo/delete-artifact@v6
         with:
           name: |
             OrcaSlicer_Mac_bundle_arm64_${{ github.sha }}