fix(deps): update dependency org.testcontainers:testcontainers-bom to v2

Author: renovate[bot]

buildSrc/src/main/kotlin/otel.java-conventions.gradle.kts

@@ -151,7 +151,7 @@ testing {
       implementation(project())
 
       implementation(enforcedPlatform("org.junit:junit-bom:5.14.0"))
-      implementation(enforcedPlatform("org.testcontainers:testcontainers-bom:1.21.3"))
+      implementation(enforcedPlatform("org.testcontainers:testcontainers-bom:2.0.1"))
       implementation(enforcedPlatform("com.google.guava:guava-bom:33.5.0-jre"))
       implementation(enforcedPlatform("com.linecorp.armeria:armeria-bom:1.33.4"))