prerelease.yml deploy to github pages needs concurrency control

[Mpdreamz]

Error: Creating Pages deployment failed
Error: HttpError: Deployment request failed for edcefbe842e776cf2af323246575599a442fed88 due to in progress deployment. Please cancel 31ea516eecc3815e2060e13dc0d3eadb1b41f8ec first or wait for it to complete.
    at /home/runner/work/_actions/actions/deploy-pages/v4.0.5/node_modules/@octokit/request/dist-node/index.js:124:1
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at createPagesDeployment (/home/runner/work/_actions/actions/deploy-pages/v4.0.5/src/internal/api-client.js:125:1)
    at Deployment.create (/home/runner/work/_actions/actions/deploy-pages/v4.0.5/src/internal/deployment.js:74:1)
    at main (/home/runner/work/_actions/actions/deploy-pages/v4.0.5/src/index.js:30:1)

Spotted here: https://github.com/elastic/docs-builder/actions/runs/17976545930/job/51131715777#step:8:27