Fix maven dependency incompatible with Java 11

[thisiskun]

Signed-off-by: Ken Chen chenchaokun@gmail.com

Description

Change the maven dependency version to make demos compatible with Java 11.

Issue reference

close #719

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• The quickstart code compiles correctly
• You've tested new builds of the quickstart if you changed quickstart code
• You've updated the quickstart's README if necessary
• If you have changed the steps for a quickstart be sure that you have updated the automated validation accordingly. All of our quickstarts have annotations that allow them to be executed automatically as code. For more information see mechanical-markdown. For user guide with examples see Examples.

[amulyavarote]

@thisiskun Can you please pull the latest changes from master and rebase them with your changes?

[thisiskun]

@amulyavarote I just made a rebase, but I am not so familiar with the rebase command, please check if it's ok, thanks.

[amulyavarote]

Changes look good to me!