Updated pom.xml for P4Runtime proto build

Change-Id: I07a7c84c7b39be0c3777293cb3fd307e9f2f634e
diff --git a/protocols/p4runtime/proto/pom.xml b/protocols/p4runtime/proto/pom.xml
index c774b41..b992f65 100644
--- a/protocols/p4runtime/proto/pom.xml
+++ b/protocols/p4runtime/proto/pom.xml
@@ -30,7 +30,7 @@
 
     <properties>
         <protobuf.version>3.2.0</protobuf.version>
-        <piCommit>13d611a9c655938676ebcde2bd5653b461f46ca7</piCommit>
+        <piCommit>219b3d67299ec09b49f433d7341049256ab5f512</piCommit>
         <piBaseUrl>https://github.com/p4lang/PI.git</piBaseUrl>
     </properties>