Update plugin com.diffplug.spotless to v6.25.0

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

app/build.gradle

@@ -29,7 +29,7 @@ buildscript {
 
 plugins {
     id "org.jetbrains.kotlin.plugin.compose" version "2.0.0"
-    id "com.diffplug.spotless" version "6.20.0"
+    id "com.diffplug.spotless" version "6.25.0"
     id "org.jetbrains.kotlin.kapt" version "2.0.0"
     id 'com.google.devtools.ksp' version '2.0.0-1.0.22' apply false
 }