Use more standard Gradle JUnit configuration (#7720)

Author: trask

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

@@ -238,6 +238,8 @@ dependencies {
 
 testing {
   suites.withType(JvmTestSuite::class).configureEach {
+    useJUnitJupiter()
+
     dependencies {
       implementation(project(project.path))
 
@@ -247,8 +249,6 @@ testing {
       compileOnly("com.google.errorprone:error_prone_annotations")
       compileOnly("com.google.code.findbugs:jsr305")
 
-      implementation("org.junit.jupiter:junit-jupiter-api")
-      implementation("org.junit.jupiter:junit-jupiter-params")
       implementation("nl.jqno.equalsverifier:equalsverifier")
       implementation("org.mockito:mockito-core")
       implementation("org.mockito:mockito-junit-jupiter")
@@ -257,7 +257,6 @@ testing {
       implementation("org.junit-pioneer:junit-pioneer")
       implementation("io.github.netmikey.logunit:logunit-jul")
 
-      runtimeOnly("org.junit.jupiter:junit-jupiter-engine")
       runtimeOnly("org.slf4j:slf4j-simple")
     }