chore(deps): bump pana from 0.21.45 to 0.22.8 (#59)

Bumps [pana](https://github.com/dart-lang/pana) from 0.21.45 to 0.22.8.
- [Release notes](https://github.com/dart-lang/pana/releases)
- [Changelog](https://github.com/dart-lang/pana/blob/master/CHANGELOG.md)
- [Commits](dart-lang/pana@0.21.45...0.22.8)

---
updated-dependencies:
- dependency-name: pana
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pubspec.yaml

@@ -12,4 +12,4 @@ dependencies:
 
 dev_dependencies:
   test: '>=1.17.0'
-  pana: ">=0.17.0 <0.22.0"
+  pana: ">=0.17.0 <0.23.0"