[PATCH][jmh-jdk-microbenchmarks] Update pom to use JMH 1.21

[Eric Caspole]

Thanks Jon!

On 05/07/2018 02:15 PM, Jonathan Gibbons wrote:
> OK.
> 
> -- Jon
> 
> 
> On 5/7/18 10:40 AM, Eric Caspole wrote:
>> Hi everyone,
>> Could I have a review and a sponsor for this new webrev that updates 
>> the pom for jmh-jdk-microbenchmarks to use the new JMH v1.21, which 
>> has fixes that are immediately useful to us.
>>
>> http://cr.openjdk.java.net/~ecaspole/use_1.21/webrev/
>>
>> Thanks,
>> Eric
>