Update dependency com.diffplug.gradle.spotless to v7 (#512)

| datasource | package                                                                 | from   | to    |
| ---------- | ----------------------------------------------------------------------- | ------ | ----- |
| maven      | com.diffplug.gradle.spotless:com.diffplug.gradle.spotless.gradle.plugin | 6.25.0 | 7.0.2 |

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -42,7 +42,7 @@ androidx-activity = "1.10.1"
 androidx-navigation = "2.8.9"
 android-gradle = "8.9.0"
 
-spotless = "6.25.0"
+spotless = "7.0.2"
 detekt = "1.23.8"
 
 kotlinx-kover = "0.9.1"

standalone-sample/kmpviewmodel_compose_koin_sample/gradle/libs.versions.toml

@@ -38,7 +38,7 @@ android-gradle = "8.9.0"
 uuid = "0.8.4"
 solivagant-navigation = "0.5.0"
 
-spotless = "6.25.0"
+spotless = "7.0.2"
 detekt = "1.23.8"
 kotlinx-kover = "0.9.1"
 dokka = "1.9.20"