Exclude oracle java 19 from GH build matrix

Author: jlink

.github/workflows/matrix.js

@@ -41,7 +41,7 @@ matrix.addAxis({
     '8',
     '11',
     '17',
-    // '20',
+    '20',
   ]
 });
 
@@ -97,7 +97,7 @@ matrix.exclude({java_distribution: 'microsoft', java_version: '8'});
 matrix.exclude({java_distribution: 'microsoft', java_version: '18'});
 matrix.exclude({java_distribution: 'microsoft', java_version: '19'});
 // Oracle supports 17+ only
-matrix.exclude({java_distribution: 'oracle', java_version: ['8', '11']});
+matrix.exclude({java_distribution: 'oracle', java_version: ['8', '11', '19']});
 // TODO: remove when compileJava with "same hashcode" issues are resolved
 // See https://bugs.openjdk.org/browse/JDK-8288590 is resolved
 // See https://github.com/jqwik-team/jqwik/pull/460#issuecomment-1428261036