update go mod/sum to include updated algorand/websocket (algorand#3221)

## Summary

This PR updates the websocket library to version 1.4.4, which includes a fix for deadlocked writers.

Author: tsachiherman

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/algorand/graphtrace v0.0.0-20201117160756-e524ed1a6f64
 	github.com/algorand/msgp v1.1.48
 	github.com/algorand/oapi-codegen v1.3.5-algorand5
-	github.com/algorand/websocket v1.4.3
+	github.com/algorand/websocket v1.4.4
 	github.com/algorand/xorfilter v0.2.0
 	github.com/aws/aws-sdk-go v1.16.5
 	github.com/chrismcguire/gobberish v0.0.0-20150821175641-1d8adb509a0e

go.sum

@@ -10,8 +10,8 @@ github.com/algorand/msgp v1.1.48 h1:5P+gVmTnk0m37r+rA3ZsFZW219ZqmCLulW5f8Z+3nx8=
 github.com/algorand/msgp v1.1.48/go.mod h1:LtOntbYiCHj/Sl/Sqxtf8CZOrDt2a8Dv3tLaS6mcnUE=
 github.com/algorand/oapi-codegen v1.3.5-algorand5 h1:y576Ca2/guQddQrQA7dtL5KcOx5xQgPeIupiuFMGyCI=
 github.com/algorand/oapi-codegen v1.3.5-algorand5/go.mod h1:/k0Ywn0lnt92uBMyE+yiRf/Wo3/chxHHsAfenD09EbY=
-github.com/algorand/websocket v1.4.3 h1:8YiA+ZtwqAyg0K30lQyl7gUdKUArYXvBtd/cTFwA4uQ=
-github.com/algorand/websocket v1.4.3/go.mod h1:0nFSn+xppw/GZS9hgWPS3b8/4FcA3Pj7XQxm+wqHGx8=
+github.com/algorand/websocket v1.4.4 h1:BL9atWs/7tkV73NCwiLZ5YqDENMBsSxozc5gDtPdsQ4=
+github.com/algorand/websocket v1.4.4/go.mod h1:0nFSn+xppw/GZS9hgWPS3b8/4FcA3Pj7XQxm+wqHGx8=
 github.com/algorand/xorfilter v0.2.0 h1:YC31ANxdZ2jmtbwqv1+USskVSqjkeiRZcQGc6//ro9Q=
 github.com/algorand/xorfilter v0.2.0/go.mod h1:f5cJsYrFbJhXkbjnV4odJB44np05/PvwvdBnABnQoUs=
 github.com/aws/aws-sdk-go v1.16.5 h1:NVxzZXIuwX828VcJrpNxxWjur1tlOBISdMdDdHIKHcc=