1.0.20

Release 1.0.20-0:

Commits since 1.0.19:

• c341fe3: Merge branch 'main' of github.com:scaffoldly/openapi-generator (Christian Nuss) [compare]

• 67c18f4: mkdir (Christian Nuss) [compare]

• 38ee808: 🤖 CI: Postrelease: 1.0.19 (GitHub Action) [compare]