Bump StyleCop.Analyzers from 1.2.0-beta.507 to 1.2.0-beta.556 (#1679) #961

Job	Run time
Linux musl (Q8/Q16/Q16-HDRI, x64)	4m 18s
Linux (Q8/Q16/Q16-HDRI, x64)	5m 46s
MacOS (Q8/Q16/Q16-HDRI)	3m 49s
Library (Core)	7m 25s
Library (SystemDrawing)	8m 24s
MacOS (Q8/Q16/Q16-HDRI, arm64)	2m 8s
Library (SystemWindowsMedia)	8m 12s
Windows (Q8, x86)	9m 3s
Windows (Q8, x64)	9m 33s
Windows (Q8, arm64)	7m 3s
Windows (Q8, Any CPU)	7m 26s
Windows (Q8-OpenMP, x64)	12m 44s
Windows (Q8-OpenMP, arm64)	8m 21s
Windows (Q16, x86)	14m 29s
Windows (Q16, x64)	10m 49s
Windows (Q16, arm64)	8m 50s
Windows (Q16, Any CPU)	8m 45s
Windows (Q16-OpenMP, x64)	8m 31s
Windows (Q16-OpenMP, arm64)	6m 41s
Windows (Q16-HDRI, x86)	9m 16s
Windows (Q16-HDRI, x64)	9m 14s
Windows (Q16-HDRI, arm64)	7m 6s
Windows (Q16-HDRI, Any CPU)	8m 37s
Windows (Q16-HDRI-OpenMP, x64)	9m 34s
Windows (Q16-HDRI-OpenMP, arm64)	7m 6s
	3h 23m 10s

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