Merge pull request #3313 from elifesciences/renovate/actions-setup-node-6.x

chore(deps): update actions/setup-node action to v6

Author: scottaubrey

.github/workflows/ci.yaml

@@ -22,7 +22,7 @@ jobs:
         run: echo "NVMRC=$(cat .nvmrc)" >> $GITHUB_OUTPUT
         id: nvm
       - name: Use Node.js (.nvmrc)
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: "${{ steps.nvm.outputs.NVMRC }}"
           cache: yarn