Grails SDK must be less than 3.0

## **Steps**

1. pressed shift+shift then typed Configure Grails SDK, then pressed enter (return)

**Expected result:**

Can use the Grails SDK 3.1.1

**Actual result**:

_⚠️ attachment `image.png` was not included in the export_{width=70%}

## **Additional information**

_⚠️ attachment `image1.png` was not included in the export_{width=70%}

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*2 attachment(s) referenced here (`image.png`, `image1.png`) are not part of the CSV export.*
*Imported from [IDEA-365200](https://youtrack.jetbrains.com/issue/IDEA-365200) · Type: Bug · Votes: 1*
*Comments, attachments, dates and reporter are not part of the export — follow the link above for the full history.*

Reproduce the issue by opening IntelliJ IDEA, invoking Search Everywhere with Shift+Shift, and selecting Configure Grails SDK. Check how the plugin validates the selected Grails SDK version; done means Grails SDK 3.1.1 can be configured without the reported restriction.

Written by the indexing model from the issue text.