fix(deps): update dependency org.testcontainers:testcontainers-bom to v1.20.5 (#1747)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

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

@@ -136,7 +136,7 @@ testing {
       implementation(project(project.path))
 
       implementation(enforcedPlatform("org.junit:junit-bom:5.11.4"))
-      implementation(enforcedPlatform("org.testcontainers:testcontainers-bom:1.20.4"))
+      implementation(enforcedPlatform("org.testcontainers:testcontainers-bom:1.20.5"))
       implementation(enforcedPlatform("com.google.guava:guava-bom:33.4.0-jre"))
       implementation(enforcedPlatform("com.linecorp.armeria:armeria-bom:1.31.3"))