Bump org.jetbrains.intellij from 1.5.3 to 1.9.0

Bumps org.jetbrains.intellij from 1.5.3 to 1.9.0.

---
updated-dependencies:
- dependency-name: org.jetbrains.intellij
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

ideaplugin/build.gradle.kts

@@ -3,7 +3,7 @@ fun properties(key: String) = project.findProperty(key).toString()
 
 
 plugins {
-    id("org.jetbrains.intellij") version "1.5.3"
+    id("org.jetbrains.intellij") version "1.9.0"
     java
     kotlin("jvm")
     id("org.jetbrains.compose")