sysutils/conky{-awesome}: update to 1.19.8

Take maintainership.

We can't exclude X11 option anymore in conky-awesome.

ChangeLog: https://github.com/brndnmtthws/conky/releases/tag/v1.19.8
Accumulated changes since 1.19.7

Features

• [Docs] Improve speedgraphs' scale description
• Drop graph/linechart from web header
• Fix labeler v5
• Show cached memory as in free (Linux only)
• Fix typo in config_settings.yaml
• Remove build date and associated vars
• Update copyright
• Update macos build images
• Bump flake deps
• Bump web deps, improve mdx handling
• Add basic pulseaudio source (microphone etc.) support
• Enable lua bindings in nix flake
• Compile tolua++ output as C++
• Refactor web search index

Bug fixes

• X11: Fix infinite loops caused
• Fix update_interval handling from CLI args
• Fix bad new/delete usage
• Fix build for imlib2 <1.10.0
• Fix buffer overflow on X11 error bug
• Fix C mangling for lua bindings
• Add wlr layer shell check
• Fix xcb include path
• Don't call FcFini()