message: codeowners: Add techdocs-core as changeset owner
diff: yarn.lock @backstage/reviewers @backstage-service
  */yarn.lock @backstage/reviewers @backstage-service
  /.changeset/cost-insights-* @backstage/reviewers @backstage/silver-lining
  -/.changeset/search-* @backstage/reviewers @backstage/techdocs-core
  -/.changeset/techdocs-* @backstage/reviewers @backstage/techdocs-core
  +/.changeset @backstage/reviewers @backstage/techdocs-core
  /cypress/src/integration/plugins/techdocs.spec.ts @backstage/reviewers @backstage/techdocs-core
  /docs/assets/search @backstage/reviewers @backstage/techdocs-core
  /docs/features/search @backstage/reviewers @backstage/techdocs-core
  