build(deps): bump com.diffplug.spotless from 8.1.0 to 8.2.1 (#1539)

Bumps com.diffplug.spotless from 8.1.0 to 8.2.1.

---
updated-dependencies:
- dependency-name: com.diffplug.spotless
  dependency-version: 8.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -49,7 +49,7 @@ sentry-kmp = "0.23.1"
 skie = "0.10.9"
 spatialk = "0.6.1"
 # changelog: https://github.com/diffplug/spotless/blob/main/plugin-gradle/CHANGES.md
-spotless = "8.1.0"
+spotless = "8.2.1"
 turbine = "1.2.1"
 
 [libraries]