fix: migration commander error

[mfranzke]

Proposed changes

Fixes the following bug within migration package

npx @db-ui/migration --type=v006_v007 --src=./src      
~/.npm/_npx/f73cec7303872e39/node_modules/commander/lib/option.js:342
      throw new Error(
            ^

Error: option creation failed due to '-dry' in option flags '-dry, --dryRun <dryRun>'
- a short flag is a single dash and a single character
  - either use a single dash and a single character (for a short flag)
  - or use a double dash for a long option (and can have two, like '--ws, --workspace'

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (fix on existing components or architectural decisions)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Further comments

[github-actions]

🔭🐙🐈 Test this branch here: https://db-ui.github.io/mono/review/fix-migration-commander-error