fix(deps): update dependency org.junit:junit-bom to v5.13.2 (open-telemetry#1977)

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

Author: renovate[bot]

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

@@ -135,7 +135,7 @@ testing {
     dependencies {
       implementation(project(project.path))
 
-      implementation(enforcedPlatform("org.junit:junit-bom:5.13.1"))
+      implementation(enforcedPlatform("org.junit:junit-bom:5.13.2"))
       implementation(enforcedPlatform("org.testcontainers:testcontainers-bom:1.21.2"))
       implementation(enforcedPlatform("com.google.guava:guava-bom:33.4.8-jre"))
       implementation(enforcedPlatform("com.linecorp.armeria:armeria-bom:1.32.5"))