[SPARK-27467][BUILD][test-maven] Upgrade Maven to 3.6.1

[dongjoon-hyun]

What changes were proposed in this pull request?

This PR aims to upgrade Maven to 3.6.1 to bring JDK9+ related patches like MNG-6506. For the full release note, please see the following.

• https://maven.apache.org/docs/3.6.1/release-notes.html

How was this patch tested?

Pass the Jenkins with [test-maven] tag.

[SparkQA]

Test build #104597 has finished for PR 24377 at commit abd1f72.

• This patch fails PySpark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[dongjoon-hyun]

Retest this please.

[SparkQA]

Test build #104603 has finished for PR 24377 at commit abd1f72.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[dongjoon-hyun]

Thank you for review and approval, @felixcheung .
Merged to master.

[HyukjinKwon]

Let me revert this as of #24480.