Update scalafmt-core to 3.7.15 in series/0.6.x #903

Job	Run time
Generate coverage report (2.13 JVM only) (ubuntu-latest, 2.13.12, temurin@11)	3m 5s
Generate Site (ubuntu-latest, temurin@11)	2m 28s
Submit Dependencies	0s
Build and Test (ubuntu-latest, 2.12, temurin@11, skunkJS)	7m 20s
Build and Test (ubuntu-latest, 2.12, temurin@11, skunkJVM)	4m 6s
Validate Steward Config (ubuntu-latest, temurin@11)	14s
Build and Test (ubuntu-latest, 2.12, temurin@11, skunkNative)	7m 31s
Build and Test (ubuntu-latest, 2.13, temurin@11, skunkJS)	6m 29s
Build and Test (ubuntu-latest, 2.13, temurin@11, skunkJVM)	4m 57s
Build and Test (ubuntu-latest, 2.13, temurin@11, skunkNative)	8m 22s
Build and Test (ubuntu-latest, 3, temurin@11, skunkJS)	6m 40s
Build and Test (ubuntu-latest, 3, temurin@11, skunkJVM)	5m 25s
Build and Test (ubuntu-latest, 3, temurin@11, skunkNative)	8m 57s
Publish Artifacts	0s
	1h 5m 34s

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