Update sbt, scripted-plugin to 1.12.6 #1467

Job	Run time
Generate Site (ubuntu-22.04, temurin@11)	2m 18s
Validate Steward Config (ubuntu-22.04, temurin@11)	15s
Test (ubuntu-22.04, 2.12, temurin@8, rootNative)	3m 26s
Test (ubuntu-22.04, 2.13, temurin@8, rootJS)	3m 31s
Test (ubuntu-22.04, 2.13, temurin@11, rootJVM)	2m 1s
Test (ubuntu-22.04, 3, temurin@8, rootJVM)	2m 33s
Test (ubuntu-22.04, 3, temurin@8, rootNative)	3m 23s
Test (ubuntu-22.04, 2.13, temurin@8, rootJVM)	2m 28s
Test (ubuntu-22.04, 2.13, temurin@8, rootNative)	2m 58s
Test (ubuntu-22.04, 2.12, temurin@8, rootJS)	2m 54s
Test (ubuntu-22.04, 3, temurin@8, rootJS)	2m 54s
Test (ubuntu-22.04, 2.12, temurin@8, rootJVM)	2m 30s
Submit Dependencies	0s
Publish Artifacts	0s
	31m 11s

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