ignition-sensors3: revision bump rebuild for protobuf

Author: scpeters

Formula/ignition-sensors3.rb

@@ -4,7 +4,7 @@ class IgnitionSensors3 < Formula
   url "https://osrf-distributions.s3.amazonaws.com/ign-sensors/releases/ignition-sensors3-3.6.0.tar.bz2"
   sha256 "b64b187333907a9e866307ccc76649672e0df9b6bdfb4a390929ebbcaa83ce64"
   license "Apache-2.0"
-  revision 17
+  revision 18
 
   head "https://github.com/gazebosim/gz-sensors.git", branch: "ign-sensors3"