fix: encoding error with email subjects

[m4ra]

URL:
user:
**expected behaviour:encoding should work, escape email subjects of apostrophes
*behaviour:
apostrophes in email subjects are not encoded.
UnicodeEncodeError: 'utf-8' codec can't encode characters in position 191-192: surrogates not allowed
(16 additional frame(s) were not displayed)
...
File "meinberlin/apps/newsletters/emails.py", line 25, in dispatch
return super().dispatch(object, *args, *kwargs)
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Comment/Question:

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[m4ra]

Removing it from the release milestone, as the django update to 4.2.12 will fix it. Keeping the issue as we need to look more into a4 and aplus as well for email subjects that need normalization.