Update SapMachine to higher version

[skateball]

Hi colleagues,
can we update this to SapMachine 17 or SapMachine 21?

fiori-elements-v4-cap-advanced/mta-java.yaml

Line 25 in dad4b52

JBP_CONFIG_SAP_MACHINE_JRE: '{ jre: { version: 11.+ } }'

Regards Christian