feat: 🎸 allow null ticker values in `Investment` entity

feat: 🎸 allow null ticker values in `Investment` entity

chore: 🤖 minor tweaks

chore: 🤖 update codeowners to use middleware team

chore: 🤖 update codeowners to use middleware team

fix: 🐛 handle null min/mix for transfer restrictions

fix: 🐛 update SSH key handling in GitHub Actions workflow

fix: 🐛 update SSH key handling in GitHub Actions workflow

feat: 🎸 publish arm docker image

publish arm64 docker image in addition to amd64

fix: 🐛 recreate entity to save the data correctly with workers