fix jitpack artifact build

Author: vananiev

jitpack.yml

@@ -0,0 +1,8 @@
+# Workaround for any java version not supported by Jitpack.io yet
+# https://github.com/jitpack/jitpack.io/issues/4260
+#before_install:
+#  - wget https://github.com/sormuras/bach/raw/master/install-jdk.sh
+#  - source install-jdk.sh --feature 15
+#  - jshell --version
+jdk:
+  - openjdk11