Use JavaParser.runtimeClasspath() not because it is better, but becau…

…se I want to see if this will still work on the saas. Will revert this change either way.

src/main/java/org/openrewrite/apache/httpclient4/MigrateDefaultHttpClient.java

@@ -53,7 +53,7 @@ public TreeVisitor<?, ExecutionContext> getVisitor() {
         return Preconditions.check(new UsesType<>("org.apache.http.impl.client.DefaultHttpClient", false), new JavaVisitor<ExecutionContext>() {
             final MethodMatcher noArgsMatcher = new MethodMatcher("org.apache.http.impl.client.DefaultHttpClient <constructor>()");
             final JavaTemplate noArgsTemplate = JavaTemplate.builder("HttpClients.createDefault()")
-                    .javaParser(JavaParser.fromJavaVersion().classpath("httpclient"))
+                    .javaParser(JavaParser.fromJavaVersion().classpath(JavaParser.runtimeClasspath()))
                     .imports("org.apache.http.impl.client.HttpClients")
                     .build();