Update github.com/Microsoft/hcsshim to v0.8.10

Brings in a variety of changes, mostly to the containerd shim.

There is also a change to the Windows layer unpack code which fixes #4301.

Release link: https://github.com/microsoft/hcsshim/releases/tag/v0.8.10

Signed-off-by: Kevin Parsons <kevpar@microsoft.com>

vendor/github.com/Microsoft/hcsshim/internal/winapi/path.go

@@ -0,0 +1,11 @@
+package winapi
+
+// DWORD SearchPathW(
+// 	LPCWSTR lpPath,
+// 	LPCWSTR lpFileName,
+// 	LPCWSTR lpExtension,
+// 	DWORD   nBufferLength,
+// 	LPWSTR  lpBuffer,
+// 	LPWSTR  *lpFilePart
+// );
+//sys SearchPath(lpPath *uint16, lpFileName *uint16, lpExtension *uint16, nBufferLength uint32, lpBuffer *uint16, lpFilePath **uint16) (size uint32, err error) = kernel32.SearchPathW