Bump github.com/DataDog/datadog-go (#23)

Author: dependabot[bot]

go.mod

@@ -3,7 +3,7 @@ module github.com/istreamlabs/go-metrics
 go 1.12
 
 require (
-	github.com/DataDog/datadog-go v4.8.1+incompatible
+	github.com/DataDog/datadog-go v4.8.3+incompatible
 	github.com/Microsoft/go-winio v0.5.0 // indirect
 	github.com/mattn/go-colorable v0.1.8 // indirect
 	github.com/mattn/go-isatty v0.0.13

go.sum

@@ -1,5 +1,5 @@
-github.com/DataDog/datadog-go v4.8.1+incompatible h1:KgnZAqwHyxgl6Fdhu2GtdZT7xFizdUBhDI05Wly0zg0=
-github.com/DataDog/datadog-go v4.8.1+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
+github.com/DataDog/datadog-go v4.8.3+incompatible h1:fNGaYSuObuQb5nzeTQqowRAd9bpDIRRV4/gUtIBjh8Q=
+github.com/DataDog/datadog-go v4.8.3+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/Microsoft/go-winio v0.5.0 h1:Elr9Wn+sGKPlkaBvwu4mTrxtmOp3F3yV9qhaHbXGjwU=
 github.com/Microsoft/go-winio v0.5.0/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=