Update testcontainers-java monorepo to v1.20.6

Author: renovate[bot]

app/build.gradle

@@ -45,9 +45,9 @@ dependencies {
 
 	runtimeOnly 'com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.13.3'
 
-	testImplementation 'org.testcontainers:testcontainers:1.17.3'
-	testImplementation "org.testcontainers:spock:1.17.3"
-	testImplementation "org.testcontainers:mockserver:1.17.3"
+	testImplementation 'org.testcontainers:testcontainers:1.20.6'
+	testImplementation "org.testcontainers:spock:1.20.6"
+	testImplementation "org.testcontainers:mockserver:1.20.6"
 	testImplementation 'org.mock-server:mockserver-client-java:5.12.0'
 	testImplementation 'org.junit.jupiter:junit-jupiter-api:5.9.3'
 }