Bump org.jetbrains.gradle.plugin.idea-ext from 0.8.1 to 0.9 (#2729)

Bumps org.jetbrains.gradle.plugin.idea-ext from 0.8.1 to 0.9.

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -8,7 +8,7 @@ plugins {
   id 'io.freefair.maven-plugin' version '5.1.1' apply false
 
   // apply so we can correctly configure the test runner to be gradle at the project level
-  id 'org.jetbrains.gradle.plugin.idea-ext' version '0.8.1'
+  id 'org.jetbrains.gradle.plugin.idea-ext' version '0.9'
 }
 
 // run tests in intellij using gradle test runner