Log Message:
neomutt: update to 20240201.

2024-02-01  Richard Russon  \<rich@flatcap.org\>
* Features
  - #4134 Command-line Crypto (neomutt -C)
* Bug Fixes
  - #4065 track new-mail check time per mailbox
  - #4141 fix(change-folder): don't exclude notmuch
  - #4147 envelope: manage subject/real_subj together
  - #4155 fix parsing of $REPLYTO
  - #4158 status: fix refresh after sync-mailbox
  - #4166 Fix two memory leaks in notmuch support
  - progress: fix percentages
* Translations
  - 100% Czech
  - 100% German
  - 100% Lithuanian
  - 100% Serbian
  - 100% Slovak
  - 100% Turkish
* Docs
  - #4172 Several fixes for the manual pages
* Build
  - build: openbsd workarounds
* Code
  - #4142 add mutt_time_now()
  - #4146 config: factor out R_ flags
  - #4154 file: upgrade mutt_file_fopen/fclose()
  - #4159 upgrade mutt_str_append_item() to use struct Buffer
  - #4161 maildir: encapsulate the header cache
  - #4162 remove mutt_str_dequote_comment()
  - #4165 bufferize mutt_str_inline_replace() as buf_inline_replace()
  - #4167 bufferize mutt_strn_rfind() as buf_rfind()
  - #4168 replace buf_len() checks with buf_is_empty()
  - config: drop unused flags
  - use message_new()/message_free()
  - Reconsider the config type bitmap entirely