Bump io.micronaut.application from 3.7.0 to 4.1.2 in /micronaut-app

Bumps io.micronaut.application from 3.7.0 to 4.1.2.

---
updated-dependencies:
- dependency-name: io.micronaut.application
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

micronaut-app/build.gradle.kts

@@ -3,7 +3,7 @@ plugins {
     id("org.jetbrains.kotlin.kapt") version "1.6.21"
     id("org.jetbrains.kotlin.plugin.allopen") version "1.6.21"
     id("com.github.johnrengelman.shadow") version "7.1.2"
-    id("io.micronaut.application") version "3.7.0"
+    id("io.micronaut.application") version "4.1.2"
     id("io.micronaut.test-resources") version "3.7.0"
 }