dependabot - bump HikariCP from 4.0.1 to 4.0.3 (#32)

Bumps [HikariCP](https://github.com/brettwooldridge/HikariCP) from 4.0.1 to 4.0.3.
- [Release notes](https://github.com/brettwooldridge/HikariCP/releases)
- [Changelog](https://github.com/brettwooldridge/HikariCP/blob/dev/CHANGES)
- [Commits](brettwooldridge/HikariCP@HikariCP-4.0.1...HikariCP-4.0.3)

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

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

build.gradle.kts

@@ -54,7 +54,7 @@ dependencies {
 
     // driver and connection pool
     implementation("org.postgresql:postgresql:42.2.18")
-    implementation("com.zaxxer:HikariCP:4.0.1")
+    implementation("com.zaxxer:HikariCP:4.0.3")
 
     // configuration
     implementation("com.typesafe:config:1.4.1")