:art: Update I2C makefile [skip ci]

diff --git a/plug b/plug
index c8b3a52df94e88765ef14050333eb5809d3045a5..b3cdf5c5923730c04a0eb9d5b59618a4d47bce07 160000 (submodule)
--- a/plug
+++ b/plug
@@ -1 +1 @@
-Subproject commit c8b3a52df94e88765ef14050333eb5809d3045a5
+Subproject commit b3cdf5c5923730c04a0eb9d5b59618a4d47bce07