:art: Update I2C makefile [skip ci] (again)

diff --git a/plug b/plug
index b3cdf5c5923730c04a0eb9d5b59618a4d47bce07..255f0cbc7a6110a6b92ac599bf86cae79b7191e4 160000 (submodule)
--- a/plug
+++ b/plug
@@ -1 +1 @@
-Subproject commit b3cdf5c5923730c04a0eb9d5b59618a4d47bce07
+Subproject commit 255f0cbc7a6110a6b92ac599bf86cae79b7191e4