3.12

What's Changed

• Fix a warning when the Parallels plugin isn't installed by @tomjn in #2670
• GMP PHP extension by @tomjn in #2676
• Update Bitbucket fingerprints by @tomjn in #2679
• Use ubuntu 20 for workflows by @tomjn in #2677
• Improve PHPCS installation by @tomjn in #2680
• Shellcheck improvements by @tomjn in #2675
• Docker improvement migrations by @tomjn in #2682
• Set up git safe.directory by @tomjn in #2681

Full Changelog: 3.11.2...3.12