Bump plugin.spring from 1.6.21 to 1.7.0

Bumps [plugin.spring](https://github.com/JetBrains/kotlin) from 1.6.21 to 1.7.0.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.7.0/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/compare/v1.6.21...v1.7.0)

---
updated-dependencies:
- dependency-name: plugin.spring
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
     id("org.springframework.boot") version "2.7.0" apply false
     id("io.spring.dependency-management") version "1.0.11.RELEASE" apply false
     kotlin("jvm") version "1.7.0" apply false
-    kotlin("plugin.spring") version "1.6.21" apply false
+    kotlin("plugin.spring") version "1.7.0" apply false
     kotlin("plugin.jpa") version "1.7.0" apply false
     id("com.netflix.dgs.codegen") version "5.1.17" apply false
 }