Update dependency androidx.compose.material3:material3 to v1.5.0-alpha15

Author: renovate[bot]

gradle/libs.versions.toml

@@ -19,7 +19,7 @@ activityCompose = "1.11.0"
 composeBom = "2025.09.01"
 
 material = "1.14.0-alpha05"
-material3 = "1.5.0-alpha04"
+material3 = "1.5.0-alpha15"
 materialIconsExtended = "1.7.8"
 navigationCompose = "2.9.5"
 roomRuntime = "2.8.1"