Default to latest version of mypy if version not is specified as a param

What's Changed

• Bump black from 21.11b1 to 21.12b0 by @dependabot in #6
• Bump python from 3.10.0-buster to 3.10.1-buster in /docker by @dependabot in #7
• Bump mypy from 0.910 to 0.920 by @dependabot in #8
• Bump mypy from 0.920 to 0.921 by @dependabot in #9
• Bump mypy from 0.921 to 0.930 by @dependabot in #10
• Bump mypy from 0.930 to 0.931 by @dependabot in #11
• Default to latest version of mypy if version not is specified as a param by @jashparekh in #12

New Contributors

• @dependabot made their first contribution in #6

Full Changelog: v2...v3