Decrease Daemon JVM memory arg to 2G

The Daemon should require less memory as more things are now run out of
process. This also matches the max memory argument passed to the compile
tasks.

gradle.properties

@@ -1,7 +1,7 @@
 # Sets default memory used for gradle commands. Can be overridden by user or command line properties.
 # This is required to provide enough memory for recompilation
 # (see also projects/neoforged/build.gradle, where the compile tasks is set to have enough memory when forked)
-org.gradle.jvmargs=-Xmx3G
+org.gradle.jvmargs=-Xmx2G
 org.gradle.daemon=true
 org.gradle.parallel=true
 org.gradle.caching=true