Bump org.jetbrains.gradle.plugin.idea-ext from 1.3 to 1.4

Bumps org.jetbrains.gradle.plugin.idea-ext from 1.3 to 1.4.

---
updated-dependencies:
- dependency-name: org.jetbrains.gradle.plugin.idea-ext
  dependency-version: '1.4'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

build.gradle

@@ -1,7 +1,7 @@
 plugins {
     id 'java'
     id 'eclipse'
-    id 'org.jetbrains.gradle.plugin.idea-ext' version '1.3'
+    id 'org.jetbrains.gradle.plugin.idea-ext' version '1.4'
     id 'xyz.jpenilla.run-paper' version '2.3.1'
     id 'xyz.jpenilla.run-velocity' version '2.3.1'
 //    id 'io.github.goooler.shadow' version '8.1.8'