Bump @typespec/versioning from 0.60.1 to 0.64.0 in /typespec #20481

Job	Run time
Publish Radius bicep types to ACR	1m 41s
Build and publish container images	6m 29s
Build linux_arm binaries	4m 22s
Build linux_arm64 binaries	4m 20s
Build linux_amd64 binaries	11m 33s
Build windows_amd64 binaries	4m 23s
Build darwin_amd64 binaries	4m 31s
Build darwin_arm64 binaries	4m 45s
Helm chart build	0s
Publish GitHub Release	0s
	42m 4s

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