upgrade gradle plugins

git-svn-id: https://svn.apache.org/repos/asf/xmlbeans/trunk@1902919 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/build.gradle b/build.gradle
index 54a8661..4a1f614 100644
--- a/build.gradle
+++ b/build.gradle
@@ -183,7 +183,7 @@
 }
 
 wrapper {
-    gradleVersion = '7.4.2'
+    gradleVersion = '7.5'
 }
 
 def extCP = files(configurations.testCompileClasspath + sourceSets.main.output.files + sourceSets.main.resources.srcDirs)