Update dependency com.diffplug.spotless:spotless-plugin-gradle to v6.25.0

| datasource | package                                      | from   | to     |
| ---------- | -------------------------------------------- | ------ | ------ |
| maven      | com.diffplug.spotless:spotless-plugin-gradle | 6.23.3 | 6.25.0 |

Author: renovate[bot]

buildSrc/src/main/kotlin/deps.kt

@@ -8,7 +8,7 @@ import org.gradle.plugin.use.PluginDependenciesSpec
 import org.gradle.plugin.use.PluginDependencySpec
 
 object versions {
-  const val spotless = "6.23.3"
+  const val spotless = "6.25.0"
   const val ktlint = "1.0.0"
   const val kotlin = "2.0.0"
   const val agp = "8.4.1"