Update com.tickaroo.tikxml to v0.8.15

Author: renovate[bot]

gradle/libs.versions.toml

@@ -23,7 +23,7 @@ threetenbp = "1.6.0"
 spotless = "6.8.0"
 androidx-fragment = "1.7.0"
 gradleDependencyUpdate = "0.47.0"
-com-tickaroo-tikxml = "0.8.13"
+com-tickaroo-tikxml = "0.8.15"
 agp = "8.4.0"
 ksp = "1.9.23-1.0.20"
 googleServices = "4.4.1"