Update plugin buildConfig to v5.6.6

Author: renovate[bot]

gradle/libs.versions.toml

@@ -43,7 +43,7 @@ jetbrains-bcv = "org.jetbrains.kotlinx.binary-compatibility-validator:0.17.0"
 jetbrains-compose = { id = "org.jetbrains.compose", version.ref = "compose" }
 jetbrains-intellij = { id = "org.jetbrains.intellij.platform", version.ref = "intellij" }
 jetbrains-intellij-module = { id = "org.jetbrains.intellij.platform.module", version.ref = "intellij" }
-buildConfig = "com.github.gmazzo.buildconfig:5.6.5"
+buildConfig = "com.github.gmazzo.buildconfig:5.6.6"
 shadow = "com.gradleup.shadow:8.3.6"
 spotless = "com.diffplug.spotless:7.0.4"