Exclude partners.json and publications.yaml from data artifact (#748)

These are hand-curated static files that should always be taken from
the master branch checkout, not overwritten by the data-processing
artifact on each deploy.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: LukasWallrich

.github/workflows/data-processing.yml

@@ -447,6 +447,8 @@ jobs:
             content/curated_resources/
             content/glossary/
             data/
+            !data/partners.json
+            !data/publications.yaml
             static/data/
             static/partials/
             content/contributor-analysis/