Force CMake 3.5 for Snappy #1850

Job	Run time
PSV.Linux.20.04.gcc7.Cpplint	8m 34s
PSV.Linux.20.04.gcc7.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 7s
PSV.Linux.22.04.gcc9.Tests.CodeCov	1m 0s
PSV.Linux.22.04.gcc11	8m 17s
PSV.Commit.Checker	8s
PSV.Linux.22.04.gcc11.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 6s
PSV.MacOS14.Xcode15	5m 25s
PSV.iOS.MacOS13.Xcode16	2m 27s
PSV.Linux.Android.20.04	7m 3s
PSV.MacOS13.Xcode16	4m 36s
PSV.iOS.MacOS13.Xcode15	4m 8s
PSV.Linux.22.04.gcc13	12m 4s
PSV.Linux.22.04.gcc13.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	6m 12s
PSV.iOS.MacOS13.Xcode14	3m 19s
PSV.iOS.MacOS14.Xcode15	3m 59s
PSV.MacOS13.Xcode15.x86_64	3m 38s
PSV.Win.VC2019	9m 47s
PSV.Linux.20.04.clang	8m 12s
	1h 33m 2s

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