rpuppy: update yaml lib version
diff --git a/apps/rpuppy/go.mod b/apps/rpuppy/go.mod
index e2c4691..646f74d 100644
--- a/apps/rpuppy/go.mod
+++ b/apps/rpuppy/go.mod
@@ -2,4 +2,7 @@
 
 go 1.16
 
-require github.com/itaysk/regogo v0.0.0-20200423164851-e9433c1fe5a7 // indirect
+require (
+	github.com/itaysk/regogo v0.0.0-20200423164851-e9433c1fe5a7
+	gopkg.in/yaml.v2 v2.2.8 // indirect
+)