ES-DE: migrating to static manifest + trying to use FFMPEG-FULL - part 3 (fix)

Author: XargonWan

net.retrodeck.es-de.yml

@@ -1,6 +1,6 @@
 app-id: net.retrodeck.es-de
 runtime: org.kde.Platform
-runtime-version: $runtime-version "6.7"
+runtime-version: &runtime-version "6.7"
 sdk: org.kde.Sdk
 sdk-extensions:
   - org.freedesktop.Sdk.Extension.llvm18