build(deps): bump piscina and @angular/build in /site - #4

Committers of pull request 4 have to sign the CLA

Error occurred when creating the signed contributors file: Branch cla-signatures not found. Make sure the branch where signatures are stored is NOT protected.

On November 2, 2026, GitHub will restrict `pull_request_target` on public repositories by default. To continue allowing the event trigger, configure an Actions policy. Learn more: https://gh.io/securely-using-pull_request_target#default-policy-for-pull_request_target

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: contributor-assistant/github-action@v2.6.1. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Unexpected input(s) 'create-file-commit-msg', 'signed-commit-msg', valid inputs are ['path-to-signatures', 'branch', 'allowlist', 'remote-repository-name', 'remote-organization-name', 'path-to-document', 'signed-commit-message', 'signed-empty-commit-message', 'create-file-commit-message', 'custom-notsigned-prcomment', 'custom-pr-sign-comment', 'custom-allsigned-prcomment', 'use-dco-flag', 'lock-pullrequest-aftermerge', 'suggest-recheck']