Upgrade com.gradle:develocity-gradle-plugin to version 4

[greg-at-moderne]

Our CI suddenly started failing with:

/home/runner/work/rewrite/rewrite/rewrite-gradle/src/main/groovy/RewriteSettings.groovy: 19: unable to resolve class com.gradle.enterprise.gradleplugin.GradleEnterpriseExtension
> Task :rewrite-gradle:compileGroovy FAILED
 @ line 19, column 1.
Created user preferences directory.
   import com.gradle.enterprise.gradleplugin.GradleEnterpriseExtension
   ^
[...]

It turned out it was after upgrade of com.gradle:develocity-gradle-plugin from 3.19.2 to 4.

For now, the 3.x version was pinned. Need to upgrade.

[timtebeek]

• https://github.com/openrewrite/rewrite/pull/5277