Closes #3494.

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  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>

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

---
updated-dependencies:
- dependency-name: actions/download-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>

Closes #3508

Closes #2610.

RET503: Missing explicit "return" at the end of function able to return non-"None" value.

---------

Co-authored-by: Stefan <96178532+stefan6419846@users.noreply.github.com>

## What's new

### New Features (ENH)
- Add 'strict' parameter to PDFWriter (#3503) by @Arya-A-Nair

### Bug Fixes (BUG)
- PdfWriter.append fails when there are articles being None (#3509) by @Noah-Houghton

### Documentation (DOC)
- Execute docs examples in CI (#3507) by @ievgen-kapinos

[Full Changelog](6.1.3...6.2.0)