Bump Fake.IO.FileSystem, Fake.IO.Zip & Fake.Tools.Git to 6.1.1 #1331

Job	Run time
YAML Tests (Released OpenSearch) (2.16.0)	4m 2s
YAML Tests (Unreleased OpenSearch) (1.x, 11)	3m 36s
YAML Tests (Released OpenSearch) (2.14.0)	3m 53s
YAML Tests (Unreleased OpenSearch) (2.x, 17)	4m 16s
YAML Tests (Unreleased OpenSearch) (main, 21)	4m 23s
YAML Tests (Released OpenSearch) (2.12.0)	3m 44s
YAML Tests (Released OpenSearch) (2.10.0)	3m 27s
YAML Tests (Released OpenSearch) (2.8.0)	3m 31s
YAML Tests (Released OpenSearch) (2.6.0)	3m 27s
YAML Tests (Released OpenSearch) (2.4.1)	3m 17s
YAML Tests (Released OpenSearch) (2.2.1)	3m 0s
YAML Tests (Released OpenSearch) (2.0.1)	3m 0s
YAML Tests (Released OpenSearch) (1.3.14)	3m 19s
YAML Tests (Released OpenSearch) (1.2.4)	3m 11s
YAML Tests (Released OpenSearch) (1.1.0)	2m 48s
	52m 54s

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