Update module github.com/PuerkitoBio/purell to v1.2.1

This MR contains the following updates:

Package	Type	Update	Change
github.com/PuerkitoBio/purell	require	patch	v1.2.0 -> v1.2.1

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Release Notes

PuerkitoBio/purell (github.com/PuerkitoBio/purell)

v1.2.1

Compare Source

What's Changed

• Added additional regex to address internal extra dots in hostnames by @​michael-peterson-cisco in https://github.com/PuerkitoBio/purell/pull/38
• Upgrade deps by @​JohnTitor in https://github.com/PuerkitoBio/purell/pull/39

New Contributors

• @​michael-peterson-cisco made their first contribution in https://github.com/PuerkitoBio/purell/pull/38

Full Changelog: https://github.com/PuerkitoBio/purell/compare/v1.2.0...v1.2.1

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