Bump com.diffplug.spotless from 8.2.1 to 8.3.0 (#33)

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ jspecify = "1.0.0"
 junit = "6.0.3"
 nmcp = "1.4.4"
 nullaway = "0.13.1"
-spotless = "8.2.1"
+spotless = "8.3.0"
 
 [plugins]
 errorprone = { id = "net.ltgt.errorprone", version.ref = "errorprone-plugin" }