chore(deps): update com.ibm.icu:icu4j to 78.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 agp = "8.13.0"
 commonsLang3 = "3.19.0"
 desugar_jdk_libs = "2.1.5"
-icu4j = "77.1"
+icu4j = "78.1"
 kotlin = "2.2.20"
 coreKtx = "1.17.0"
 junit = "4.13.2"