Bump org.postgresql:postgresql from 42.5.1 to 42.6.0 in /springboot-a…

…pp (#27)

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.5.1 to 42.6.0.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.5.1...REL42.6.0)

---
updated-dependencies:
- dependency-name: org.postgresql:postgresql
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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springboot-app/build.gradle.kts

@@ -20,7 +20,7 @@ dependencies {
   implementation("org.springframework.cloud:spring-cloud-starter-vault-config")
 
   implementation("org.springframework.boot:spring-boot-starter-jdbc")
-  implementation("org.postgresql:postgresql:42.5.1")
+  implementation("org.postgresql:postgresql:42.6.0")
   implementation("org.flywaydb:flyway-core:9.10.2")
 
   implementation("com.fasterxml.jackson.module:jackson-module-kotlin")