emulators/es-de: Update to 3.2.0

Unbundle graphics/lunasvg: was the last bundled dependency in the external
directory. We can now exclude this directory from extraction via
EXTRACT_AFTER_ARGS and simplify its handling in the CMakeLists.txt
patch.
Paths in BUILD_DEPENDS are replaced with the "port notation".
Addition of find_package(RapidJSON REQUIRED) in the CMakeLists.txt patch
when unbundling devel/rapidjson was actually never needed. So it got
removed.

Changelog:
https://gitlab.com/es-de/emulationstation-de/-/releases/v3.2.0

PR: 285888
Approved by: submitter is maintainer