fix test on jdk8

Author: laurit

instrumentation/apache-httpclient/apache-httpclient-4.3/testing/build.gradle.kts

@@ -2,6 +2,16 @@ plugins {
   id("otel.java-conventions")
 }
 
+tasks {
+  compileJava {
+    // when code is compiled with jdk 21 and executed with jdk 8 -parameters flag is needed to avoid
+    // java.lang.reflect.MalformedParametersException: Invalid parameter name ""
+    // when junit calls java.lang.reflect.Executable.getParameters() on the constructor of a
+    // non-static nested test class
+    options.compilerArgs.add("-parameters")
+  }
+}
+
 dependencies {
   api(project(":testing-common"))