Bump org.apache.maven.plugins:maven-source-plugin from 3.2.1 to 3.4.0.

[slawekjaranowski]

What changed:

• Updated version.maven-source-plugin from 3.2.1 to 3.4.0.

• Use the same name for execution as is in parent to allow add next goal to existing execution without trigger the same build twice

• Removed plugin execution from apache-release profile - it will trigger second build of the same artifact

This resolves a problem reported in issue:

• [MSOURCES-143] Can't create a source and test jar in Commons using commons-parent maven-source-plugin#205

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I have tested on commons-validator with profiles release - commons custom and apache-release from ASF parent

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[garydgregory]

-1 until https://issues.apache.org/jira/projects/MSOURCES/issues/MSOURCES-143 is fixed.