Bump actions/upload-artifact from 5 to 6 (#6426)

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

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Kim Kulling <kimkulling@users.noreply.github.com>

.github/workflows/ccpp.yml

@@ -109,7 +109,7 @@ jobs:
       run: cd build/bin && ./unit ${{ steps.hunter_extra_test_args.outputs.args }}
       shell: bash
 
-    - uses: actions/upload-artifact@v5
+    - uses: actions/upload-artifact@v6
       if: matrix.name == 'windows-msvc'
       with:
         name: 'assimp-bins-${{ matrix.name }}'
@@ -141,7 +141,7 @@ jobs:
           prerelease: true
       - run: |
           echo '${{steps.create-release.outputs.upload_url}}' > release_upload_url.txt
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: create-release
           path: release_upload_url.txt

.github/workflows/cifuzz.yml

@@ -19,7 +19,7 @@ jobs:
         dry-run: false
         language: c++
     - name: Upload Crash
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       if: failure() && steps.build.outcome == 'success'
       with:
         name: artifacts