Bump target IDEA version to 2024.2

[Goooler]

No description provided.

[egorikftp]

Will this not break support for older IntelliJ versions?

[Goooler]

The compatible version range should be

Valkyrie/idea-plugin/build.gradle.kts

Lines 66 to 69 in 5af1a42

	pluginConfiguration.ideaVersion {
	sinceBuild = "241"
	untilBuild = "242.*"
	}

[Goooler]

I verified the distribution on 2024.1.4 and 2024.2, both work well.

[Goooler]

https://github.com/ComposeGears/Valkyrie/actions/runs/10283050259/job/28456063748?pr=104

[org.jetbrains.intellij.platform] The following plugin configuration issues were found:
- The since-build='241' is lower than the target IntelliJ Platform major version: '242'.
- The Java configuration specifies sourceCompatibility='17' but IntelliJ Platform '2024.2' requires sourceCompatibility='21'.

[Goooler]

May hold this PR until we are ready to drop 2024.1 supports.