Bump pypdns from 2.1.0 to 2.2.1 in /requirements

[dependabot[bot]]

Bumps pypdns from 2.1.0 to 2.2.1.

Release notes

Sourced from pypdns's releases.

v2.2.1

Maintenance release, strict typing, update dependencies.

Full Changelog: https://github.com/CIRCL/PyPDNS/compare/v2.2.0...v2.2.1

Commits

• abc728c chg: Bump version...
• 2acefb8 Merge pull request #10 from CIRCL/dependabot/github_actions/actions/setup-pyt...
• 58e12ca Merge pull request #11 from CIRCL/dependabot/github_actions/actions/checkout-4
• ef8d78e Merge pull request #12 from CIRCL/dependabot/pip/pytest-8.0.0
• a341b77 build(deps-dev): bump pytest from 7.4.4 to 8.0.0
• 3b939fc build(deps): bump actions/checkout from 3 to 4
• bf859c8 build(deps): bump actions/setup-python from 4 to 5
• 14dc851 chg: Add dependabot
• 0d52384 chg: Bump deps
• 1150b49 new: Add pre commit
• Additional commits viewable in compare view

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