x11/xscreensaver: update to 6.07

Changelog:

• New hacks, droste, skulloop, papercube and cubocteversion.
• xscreensaver-settings was sometimes turning off the DPMS checkbox.
• Log pid of caller of deactivate command, to give a hint about who is preventing the screen from blanking.
• recanim uses libffmpeg.
• Updates to sphereeversion.
• Added some new map sources to mapscroller.
• macOS: Worked around a macOS 13.4 bug where multi-head systems would fail to launch savers on some or all screens.
• Minimum compiler target is now ISO C99 instead of ANSI C89. Didn't want to rush into it.
• macOS, Android: Better looking thunbmail images.
• Various other minor bug fixes.

PR: 274126
Approved by: x11 (maintainer timeout)