Update websockets version
<jetty.version>9.4.14.v20181114</jetty.version>
<jetty9.asm.version>7.0</jetty9.asm.version>
<uel.glassfish.version>2.2</uel.glassfish.version>
- <websockets.api>1.1.2</websockets.api>
+ <websockets.api>2.0.0-RC1</websockets.api>
<!-- We need undertow which uses Jakarta 9 packages! -->
<undertow.version>2.0.30.Final</undertow.version>
<!-- Testing deps -->
