Merge pull request #41677 from thaJeztah/go_winio

vendor: github.com/Microsoft/go-winio v0.4.15 was tagged

vendor.conf

@@ -1,6 +1,6 @@
 github.com/Azure/go-ansiterm                        d6e3b3328b783f23731bc4d058875b0371ff8109
 github.com/Microsoft/hcsshim                        9dcb42f100215f8d375b4a9265e5bba009217a85 # moby branch
-github.com/Microsoft/go-winio                       5b44b70ab3ab4d291a7c1d28afe7b4afeced0ed4 # v0.4.15-0.20200908182639-5b44b70ab3ab
+github.com/Microsoft/go-winio                       5b44b70ab3ab4d291a7c1d28afe7b4afeced0ed4 # v0.4.15
 github.com/docker/libtrust                          9cbd2a1374f46905c68a4eb3694a130610adc62a
 github.com/golang/gddo                              72a348e765d293ed6d1ded7b699591f14d6cd921
 github.com/google/uuid                              0cd6bf5da1e1c83f8b45653022c74f71af0538a4 # v1.1.1