Log Message:
neomutt: update to 20220415.

2022-04-15  Richard Russon  <rich@flatcap.org>
* Security
  - Fix uudecode buffer overflow (CVE-2022-1328)
* Features
  - Colours, colours, colours
* Bug Fixes
  - Pager: fix pager_stop
  - Merge colours with normal
  - Color: disable mono command
  - Fix forwarding text attachments when honor_disposition is set
  - Pager: drop the nntp change-group bindings
  - Use mailbox_check flags coherently, add IMMEDIATE flag
  - Fix: tagging in attachment list
  - Fix: misalignment of mini-index
  - Make sure to update the menu size after a resort
* Translations
  - 100% Hungarian
* Build
  - Update acutest
* Code
  - Unify pipe functions
  - Index: notify if navigation fails
  - Gui: set colour to be merged with normal
  - Fix: leak in tls_check_one_certificate()
* Upstream
  - Flush iconv() in mutt_convert_string()
  - Fix integer overflow in mutt_convert_string()
  - Fix uudecode cleanup on unexpected eof