Bump org.jetbrains.kotlin:kotlin-gradle-plugin in /buildSrc

Bumps [org.jetbrains.kotlin:kotlin-gradle-plugin](https://github.com/JetBrains/kotlin) from 1.9.22 to 1.9.23.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.9.23/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.22...v1.9.23)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

buildSrc/build.gradle.kts

@@ -7,7 +7,7 @@ repositories {
 }
 
 dependencies {
-    implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.22")              // kotlin("jvm")
+    implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.23")              // kotlin("jvm")
     implementation("org.jetbrains.kotlin:kotlin-allopen:1.9.22")                    // kotlin("plugin.spring")
     implementation("org.springframework.boot:spring-boot-gradle-plugin:3.2.2")      // id("org.springframework.boot")
     implementation("io.spring.gradle:dependency-management-plugin:1.1.4")           // id("io.spring.dependency-management")