release-tool 0.11.20

What's Changed

• chore(deps-dev): bump phpstan/phpstan from 2.2.14 to 2.2.15 by @dependabot[bot] in #123
• docs: explain release steps after prepare merge by @vitormattos in #124
• chore: release 0.11.20 by @vitormattos in #125

Full Changelog: v0.11.19...v0.11.20