chore: advance eka2l1 standalone to upstream head

Standalone pin d55da28 to cc30b45. The five commits touch the window
server and fbs bitmap code only: no file read, path or hash changes.
screen.cpp lost eight lines above the upscale shader call, so its
citation moves from 636-638 to 628-630. The libretro pin e39ccac is the
head of the libretro branch and 11f5b6c is still its merge base.

website/src/data/source-paths.json

@@ -676,7 +676,7 @@
   "src/patch/vibractrl/group/vibractrl.dll.map",
   "src/scripts/aq_crash_fix.lua"
  ],
- "github.com/EKA2L1/EKA2L1@d55da28f59d56d0cd1f49d9e9780047960d973e5": [
+ "github.com/EKA2L1/EKA2L1@cc30b451eaab3b73930ce0fbf2dabcfc31476e28": [
   ".gitmodules",
   "CMakeLists.txt",
   "README.md",