build: bump version to v0.3.0-alpha.rc3

Author: Roasbeef

version.go

@@ -49,7 +49,7 @@ const (
 
 	// AppPreRelease MUST only contain characters from semanticAlphabet
 	// per the semantic versioning spec.
-	AppPreRelease = "alpha.rc2"
+	AppPreRelease = "alpha.rc3"
 
 	// defaultAgentName is the default name of the software that is added as
 	// the first part of the user agent string.