bumped to cdt 11.4.0

[jurgenvinju]

No description provided.

[jurgenvinju]

The problem with merging this PR is this:

Warning: Could not load lang::cpp::AST due to: org/eclipse/cdt/core/dom/ast/ASTVisitor has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 55.0 at |prompt:///|(0,22,<1,0>,<1,22>)
java.lang.UnsupportedClassVersionError: org/eclipse/cdt/core/dom/ast/ASTVisitor has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 55.0
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
	at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:800)
	at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:698)
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:621)
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:579)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:576)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:576)

It will not run on Java 11 anymore. And this will bubble up to all the Rascal infrastructure, including the eclipse plugins and the VScode extensions.