Bump net.ltgt.errorprone from 3.1.0 to 4.0.0 (#114)

Bumps net.ltgt.errorprone from 3.1.0 to 4.0.0.

---
updated-dependencies:
- dependency-name: net.ltgt.errorprone
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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build.gradle.kts

@@ -10,7 +10,7 @@ plugins {
     id("checkstyle")
     id("pmd")
     id("com.github.spotbugs") version "6.0.15"
-    id("net.ltgt.errorprone") version "3.1.0"
+    id("net.ltgt.errorprone") version "4.0.0"
     id("maven-publish")
     id("io.freefair.lombok") version "8.6"
     id("com.github.ben-manes.versions") version "0.51.0"