Update sbt, scripted-plugin to 1.11.6 in 0.11.x (#1960) #2846

Job	Run time
conformance	1m 48s
build (3, test)	10m 11s
build (2_12, test)	9m 14s
build (2_12, e2e)	3m 13s
build (2_12, examples_and_formatting)	2m 43s
build (3, e2e)	4m 10s
build (3, mima)	12s
build (2_13, test)	13m 9s
build (2_13, e2e)	3m 46s
build (2_13, mima)	1m 20s
build (2_13, scala3_compat_test)	7m 39s
build (3, scala3_compat_test)	7m 43s
build (2_12, mima)	1m 18s
ci-passed	4s
	1h 6m 30s

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