perf(about): parse aboutlibraries.json off the main thread

Bump AboutLibraries plugin to 15.0.4 -> 15.2.0; parse
aboutlibraries.json on Dispatchers.IO via produceState (header renders
immediately, rows fill in); drop animateContentSize from rows.

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-aboutlibraries = "15.0.4"
+aboutlibraries = "15.2.0"
 activity_compose = "1.13.0"
 agp = "9.3.1"
 compose_bom = "2026.08.00"