build.gradle files in released tags contain wrong helidon version

[barchetta]

The helidon version in build.gradle files is not getting updated when we release examples. This is true for 4.x, 3.x and 2.x releases. For one example see

https://github.com/helidon-io/helidon-examples/blob/4.1.0/examples/quickstarts/helidon-quickstart-mp/build.gradle

Looks like the updatehelidonversion script is not updating build.gradle files.

• 4.x: 4.x: Fix update-version script to update helidon-version in build.gradle  #86
• 3.x
• 2.x