Bump mailchecker from 5.0.5 to 5.0.6 (#208)

Bumps [mailchecker](https://github.com/FGRibreau/mailchecker) from 5.0.5 to 5.0.6.
- [Release notes](https://github.com/FGRibreau/mailchecker/releases)
- [Changelog](https://github.com/FGRibreau/mailchecker/blob/master/CHANGELOG.md)
- [Commits](FGRibreau/mailchecker@v5.0.5...v5.0.6)

---
updated-dependencies:
- dependency-name: mailchecker
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -1,6 +1,6 @@
 boto3 == 1.26.41
 ftfy == 6.1.1
-mailchecker == 5.0.5
+mailchecker == 5.0.6
 openpyxl == 3.0.10
 phonenumbers == 8.13.3
 python-dateutil == 2.8.2