Update to Maven 3.8.5 (netty#12314)

Motivation:
We should keep our Maven Wrapper up-to-date

Modification:
- Bumped Maven Wrapper to v3.8.5
- Not use jctools in microbenchmark module

Result:
Latest Maven release

Co-authored-by: Norman Maurer <[email protected]>

.mvn/wrapper/maven-wrapper.properties

@@ -1 +1 @@
-distributionUrl=https://maven-central.storage-download.googleapis.com/maven2/org/apache/maven/apache-maven/3.8.4/apache-maven-3.8.4-bin.zip
+distributionUrl=https://maven-central.storage-download.googleapis.com/maven2/org/apache/maven/apache-maven/3.8.5/apache-maven-3.8.5-bin.zip

microbench/src/main/java/io/netty/handler/codec/http/DecodeHexBenchmark.java

@@ -16,9 +16,9 @@
 package io.netty.handler.codec.http;
 
 import io.netty.microbench.util.AbstractMicrobenchmark;
+import io.netty.util.internal.MathUtil;
 import io.netty.util.internal.PlatformDependent;
 import io.netty.util.internal.StringUtil;
-import org.jctools.util.Pow2;
 import org.openjdk.jmh.annotations.Benchmark;
 import org.openjdk.jmh.annotations.CompilerControl;
 import org.openjdk.jmh.annotations.CompilerControl.Mode;
@@ -59,7 +59,7 @@ public class DecodeHexBenchmark extends AbstractMicrobenchmark {
     public void init() {
         final char[] hexCh = hex.toCharArray();
         next = 0;
-        inputs = Pow2.roundToPowerOfTwo(inputs);
+        inputs = MathUtil.findNextPositivePowerOfTwo(inputs);
         hexDigits = new char[inputs][];
         hexDigits[0] = hexCh;
         if (inputs > 1) {