Remove testcontainers version, it is set via bom (#8880)

Author: laurit

instrumentation/cassandra/cassandra-4-common/testing/build.gradle.kts

@@ -5,6 +5,6 @@ plugins {
 dependencies {
   api(project(":testing-common"))
 
-  implementation("org.testcontainers:testcontainers:1.17.5")
+  implementation("org.testcontainers:testcontainers")
   implementation("com.datastax.oss:java-driver-core:4.0.0")
 }

instrumentation/pulsar/pulsar-2.8/javaagent/build.gradle.kts

@@ -15,7 +15,7 @@ dependencies {
   library("org.apache.pulsar:pulsar-client:2.8.0")
 
   testImplementation("javax.annotation:javax.annotation-api:1.3.2")
-  testImplementation("org.testcontainers:pulsar:1.17.1")
+  testImplementation("org.testcontainers:pulsar")
   testImplementation("org.apache.pulsar:pulsar-client-admin:2.8.0")
 }
 

instrumentation/rocketmq/rocketmq-client/rocketmq-client-5.0/testing/build.gradle.kts

@@ -7,6 +7,6 @@ dependencies {
 
   // earlier versions have bugs that may make tests flaky.
   implementation("org.apache.rocketmq:rocketmq-client-java:5.0.2")
-  implementation("org.testcontainers:testcontainers:1.17.5")
+  implementation("org.testcontainers:testcontainers")
   implementation("io.opentelemetry:opentelemetry-api")
 }