chore: update ecmaScript to 11 #183

Job	Run time
leia-tests (ubuntu-latest, lts/*, basics-example)	2m 27s
leia-tests (ubuntu-latest, lts/*, badname-example)	1m 17s
leia-tests (ubuntu-latest, lts/*, custom-landofile-name-example)	1m 24s
leia-tests (ubuntu-latest, lts/*, events-example)	1m 49s
leia-tests (ubuntu-latest, lts/*, keys-example)	2m 56s
leia-tests (ubuntu-latest, lts/*, networking-example)	3m 7s
leia-tests (ubuntu-latest, lts/*, proxy-example)	1m 53s
leia-tests (ubuntu-latest, lts/*, scanner-example)	1m 9s
leia-tests (ubuntu-latest, lts/*, services-example)	4m 1s
leia-tests (ubuntu-latest, lts/*, tooling-example)	1m 53s
leia-tests (ubuntu-latest, lts/*, lando-101)	4m 10s
	26m 6s

Provide feedback