Update sbt, scripted-plugin to 1.11.6 in 0.11.x (#1960) #1534

Job	Run time
conformance	4m 6s
build (2_12, mima)	2m 6s
build (2_13, mima)	1m 30s
build (2_12, test)	12m 23s
build (2_12, e2e)	3m 14s
build (3, e2e)	4m 21s
build (3, mima)	11s
build (2_13, test)	11m 23s
build (2_13, scala3_compat_test)	11m 17s
build (3, scala3_compat_test)	7m 43s
build (2_13, e2e)	4m 8s
build (3, test)	10m 57s
build (2_12, examples_and_formatting)	3m 10s
ci-passed	2s
	1h 16m 31s

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