Update plugin com.gradle.plugin-publish to v2.1.1 (#155)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
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|---|---|---|---|
| com.gradle.plugin-publish | `2.1.0` → `2.1.1` |
![age](https://developer.mend.io/api/mc/badges/age/maven/com.gradle.plugin-publish:com.gradle.plugin-publish.gradle.plugin/2.1.1?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.gradle.plugin-publish:com.gradle.plugin-publish.gradle.plugin/2.1.0/2.1.1?slim=true)
|

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build.gradle.kts

@@ -43,7 +43,7 @@ plugins {
     `java-gradle-plugin`
     kotlin("jvm") version "2.3.20"
     id("maven-publish")
-    id("com.gradle.plugin-publish") version "2.1.0"
+    id("com.gradle.plugin-publish") version "2.1.1"
     id("org.jlleitschuh.gradle.ktlint") version "14.2.0"
 }