Misleading message about Kotlin language version

[jansorg]

Describe the bug
The message below is misleading.
With Kotlin, only languageVersion=1.4 is allowed.

> Task :plugin:verifyPluginConfiguration
[gradle-intellij-plugin :plugin:verifyPluginConfiguration] The following plugin configuration issues were found:
- The Kotlin configuration specifies languageVersion=1.4 but IntelliJ Platform 2021.1 requires languageVersion=1.4.32.
See: https://jb.gg/intellij-platform-versions

I attempted to define 1.4.32 as language version:

withType<KotlinCompile> {
            kotlinOptions {
                // ...
                languageVersion = if (platformVersion >= 212) "1.6" else "1.4.32"
               // ...
        }

e: Unknown language version: 1.4.32
Supported language versions: 1.3 (deprecated), 1.4 (deprecated), 1.5, 1.6, 1.7, 1.8 (experimental), 1.9 (experimental)
w: API version 1.4 is deprecated and its support will be removed in a future version of Kotlin

To Reproduce
See above

Expected behavior
No warning if major.minor match the Kotlin language version (i.e. 1.4)

Environment:

• OS: Linux
• Gradle IntelliJ Plugin Version: 1.10.0-SNAPSHOT
• Gradle Version: 7.5.2

[mlytvyn]

@hsz, jFYI.
Same warning for 1.8 Kotlin, IDEA 231.7864.76 & gradle plugin 1.13.1

configuration

withType<KotlinCompile>().configureEach {
        kotlinOptions {
            jvmTarget = sourceVersion
            apiVersion = "1.8"
            languageVersion = "1.8"
        }
    }

Warning message:

> Task :verifyPluginConfiguration
[gradle-intellij-plugin :verifyPluginConfiguration] The following plugin configuration issues were found:
- The Kotlin configuration specifies apiVersion=1.8 but since-build='231.7864.76' property requires apiVersion=1.8.0.
See: https://jb.gg/intellij-platform-versions