build(deps): bump the gradle-minor group with 2 updates

Bumps the gradle-minor group with 2 updates: [com.diffplug.spotless:spotless-plugin-gradle](https://github.com/diffplug/spotless) and com.diffplug.spotless.


Updates `com.diffplug.spotless:spotless-plugin-gradle` from 8.5.1 to 8.6.0
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@gradle/8.5.1...gradle/8.6.0)

Updates `com.diffplug.spotless` from 8.5.1 to 8.6.0

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-plugin-gradle
  dependency-version: 8.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle-minor
- dependency-name: com.diffplug.spotless
  dependency-version: 8.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

build-logic/conventions/build.gradle.kts

@@ -13,7 +13,7 @@ repositories {
 
 dependencies {
     implementation("org.jetbrains.kotlin:kotlin-stdlib")
-    implementation("com.diffplug.spotless:spotless-plugin-gradle:8.5.1")
+    implementation("com.diffplug.spotless:spotless-plugin-gradle:8.6.0")
 }
 
 gradlePlugin {

gradle/libs.versions.toml

@@ -3,7 +3,7 @@
 [versions]
 cpp-standard = "17"
 kotlin = "1.9.22"
-spotless = "8.5.1"
+spotless = "8.6.0"
 
 # Testing
 junit = "5.9.3"