build(deps): Bump dawidd6/action-download-artifact from 18 to 19

Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 18 to 19.
- [Release notes](https://github.com/dawidd6/action-download-artifact/releases)
- [Commits](dawidd6/action-download-artifact@1f8785f...8a33849)

---
updated-dependencies:
- dependency-name: dawidd6/action-download-artifact
  dependency-version: '19'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/docs-pr-netlify.yaml

@@ -14,7 +14,7 @@ jobs:
       # There's a 'download artifact' action, but it hasn't been updated for the workflow_run action
       # (https://github.com/actions/download-artifact/issues/60) so instead we get this mess:
       - name: 📥 Download artifact
-        uses: dawidd6/action-download-artifact@1f8785ff7a5130826f848e7f72725c85d241860f # v18
+        uses: dawidd6/action-download-artifact@8a338493df3d275e4a7a63bcff3b8fe97e51a927 # v19
         with:
           workflow: docs-pr.yaml
           run_id: ${{ github.event.workflow_run.id }}