Bug Report

• Yes, I reviewed the contribution guidelines.
• Yes, more specifically, I reviewed the guidelines on how to write clear bug reports.

Describe the current, buggy behavior

php-wpcli_latest_all.deb points to build 2.7.1 but the latest build is 2.8.1.

Describe how other contributors can replicate this bug

$ curl 'https://raw.githubusercontent.com/wp-cli/builds/gh-pages/deb/php-wpcli_latest_all.deb'
php-wpcli_2.7.1_all.deb

Describe what you would expect as the correct outcome

php-wpcli_2.8.1_all.deb