add build support for Java 23

Author: osiegmar

buildSrc/src/main/kotlin/fastcsv.java-conventions.gradle.kts

@@ -16,8 +16,8 @@ tasks.withType<com.github.spotbugs.snom.SpotBugsTask>().configureEach {
 }
 
 pmd {
-    // Version bundled with Gradle 8.8 is not able to run on Java 22.
-    toolVersion = "7.2.0"
+    // Version bundled with Gradle 8.10 is not able to run on Java 23.
+    toolVersion = "7.5.0"
     isConsoleOutput = true
     ruleSets = emptyList()
     ruleSetFiles = files("${project.rootDir}/config/pmd/config.xml")