Update Golangci-lint (#16)

Updating Golangci-lint version to fix issue found in #15

Author: Eoghan Russell

Makefile

@@ -3,7 +3,7 @@ clean:
 	go clean --modcache
 
 build:
-	go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.45.2
+	go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.49
 	go mod tidy
 	go fmt ./...
 	golangci-lint run