www/dooble: update to 2023.07.15

ChangeLog: https://github.com/textbrowser/dooble/releases/tag/2023.07.15

 * Display discovered shorcuts in Settings -> Display. Read-only.
 * Initialize s[i] elements in Threefish.
 * Introduced --attach and --listen command-line options. If a Dooble instance
   is available, a new Dooble instance will attach its URLs to the existing
   Dooble instance.
 * New executable-current-url command-line option. See Tools -> Current URL
   Executable(s). Multiple instances are allowed and Dooble does not verify
   content.
 * Scoped C++ enumerators.

PR:		272490
Reported by:	eric@camachat.org (maintainer)