Bump kotlinVersion from 1.9.0 to 2.0.0 (#63)

Bumps `kotlinVersion` from 1.9.0 to 2.0.0.

Updates `jvm` from 1.9.0 to 2.0.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.0...v2.0.0)

Updates `plugin.spring` from 1.9.0 to 2.0.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.0...v2.0.0)

Updates `plugin.jpa` from 1.9.0 to 2.0.0
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.0...v2.0.0)

---
updated-dependencies:
- dependency-name: jvm
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: plugin.spring
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: plugin.jpa
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

build.gradle.kts

@@ -2,7 +2,7 @@ import com.diffplug.gradle.spotless.SpotlessExtension
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-  val kotlinVersion = "1.9.0"
+  val kotlinVersion = "2.0.0"
   kotlin("jvm") version kotlinVersion
   kotlin("plugin.spring") version kotlinVersion
   kotlin("plugin.jpa") version kotlinVersion