Increase Gradle JVM memory to prevent out of memory error (OpenLiberty#1427)

* Add intellij-2025.3-support branch to CI workflow

* Increase Gradle JVM memory allocation

* Increase Gradle JVM memory to 6GB

* Update build.yaml

* Update Gradle JVM memory and encoding settings

* Increase Gradle heap size to 2 GB

Author: anusreelakshmi934

gradle.properties

@@ -16,5 +16,8 @@ platformBundledPlugins=com.intellij.java, org.jetbrains.idea.maven, com.intellij
 lsp4JakartaVersion=0.2.3
 lsp4mpVersion=0.13.0
 lemminxVersion=0.26.1
-lclsLemminxVersion=2.3.2
-lclsVersion=2.3.2
+lclsLemminxVersion=2.4
+lclsVersion=2.4
+
+# Increase Gradle memory by setting maximum heap size to 2 GB and minimum to 1 GB to prevent OutOfMemoryError
+org.gradle.jvmargs=-Xmx2g -Xms1g -Dfile.encoding=UTF-8