build(deps): bump com.diffplug.spotless from 8.8.0 to 8.9.0 (#136)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: William Bergamin <wbergamin@slack-corp.com>

Author: dependabot[bot]

build.gradle

@@ -1,6 +1,6 @@
 plugins {
 	id 'application'
-	id "com.diffplug.spotless" version "8.8.0"
+	id "com.diffplug.spotless" version "8.9.0"
 }
 
 java {