chore(deps): Bump actions/upload-artifact from 5.0.0 to 6.0.0

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@330a01c...b7c566a)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/sphinxbuild.yml

@@ -24,7 +24,7 @@ jobs:
       shell: bash
       run: tar czf /tmp/documentation.tar.gz -C user_manual/_build/html .
     - name: Upload static documentation
-      uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
       with:
         name: User manual.zip
         path: "/tmp/documentation.tar.gz"
@@ -58,7 +58,7 @@ jobs:
       shell: bash
       run: tar czf /tmp/documentation.tar.gz -C developer_manual/_build/html/com .
     - name: Upload static documentation
-      uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
       with:
         name: Developer manual.zip
         path: "/tmp/documentation.tar.gz"
@@ -79,7 +79,7 @@ jobs:
       shell: bash
       run: tar czf /tmp/documentation.tar.gz -C admin_manual/_build/html/com .
     - name: Upload static documentation
-      uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
       with:
         name: Administration manual.zip
         path: "/tmp/documentation.tar.gz"