Update all patch dependencies to v1.20.6

Author: renovate[bot]

gradle/libs.versions.toml

@@ -10,7 +10,7 @@ mockito = "5.15.2"
 okhttp = "4.12.0"
 owner = "1.0.12"
 prometheus-simpleClient = "0.16.0"
-testcontainers = "1.20.5"
+testcontainers = "1.20.6"
 
 [libraries]
 assertj = { module = "org.assertj:assertj-core", version.ref = "assertj" }