Update Rust crate lettre to v0.11.9

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
lettre (source)	dependencies	patch	=0.11.8 -> =0.11.9

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Release Notes

lettre/lettre (lettre)

v0.11.9

Compare Source

Bug fixes

• Fix feature gate for accept_invalid_hostnames for rustls (#​988)
• Fix parsing Mailbox with trailing spaces (#​986)

Misc

• Bump rustls-native-certs to v0.8 (#​992)
• Make getting started example in readme complete (#​990)

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Configuration

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.07%. Comparing base (aa94b00) to head (8dae70e).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9439      +/-   ##
==========================================
+ Coverage   89.05%   89.07%   +0.01%     
==========================================
  Files         285      285              
  Lines       28941    28941              
==========================================
+ Hits        25773    25778       +5     
+ Misses       3168     3163       -5     

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