fix(deps): update dependency org.testcontainers:testcontainers to v1.…

…20.3

buildSrc/src/main/kotlin/Dependencies.kt

@@ -16,7 +16,7 @@ object PluginLibs {
         const val jooq = "3.14.13"
         const val docker = "8.1.0"
         const val shadow = "7.1.2"
-        const val testcontainers = "1.19.7"
+        const val testcontainers = "1.20.3"
         const val yaml = "2.2"
     }