Bumped version of gRPC to 1.3.1

Change-Id: I7798476bd443a796e0e6a6e149ab8f66435ba4fa
diff --git a/drivers/barefoot/BUCK b/drivers/barefoot/BUCK
index 6dfe7ba..8bcefde 100644
--- a/drivers/barefoot/BUCK
+++ b/drivers/barefoot/BUCK
@@ -1,4 +1,4 @@
-GRPC_VER = '1.3.0'
+GRPC_VER = '1.3.1'
 
 COMPILE_DEPS = [
     '//lib:CORE_DEPS',
diff --git a/drivers/bmv2/BUCK b/drivers/bmv2/BUCK
index d79c85f..63feb68 100644
--- a/drivers/bmv2/BUCK
+++ b/drivers/bmv2/BUCK
@@ -1,4 +1,4 @@
-GRPC_VER = '1.3.0'
+GRPC_VER = '1.3.1'
 
 COMPILE_DEPS = [
     '//lib:CORE_DEPS',
diff --git a/drivers/bmv2/pom.xml b/drivers/bmv2/pom.xml
index b68f094..d9a9cf4 100644
--- a/drivers/bmv2/pom.xml
+++ b/drivers/bmv2/pom.xml
@@ -39,7 +39,7 @@
         <dependency>
             <groupId>io.grpc</groupId>
             <artifactId>grpc-netty</artifactId>
-            <version>1.3.0</version>
+            <version>1.3.1</version>
         </dependency>
 
         <dependency>
diff --git a/drivers/p4runtime/BUCK b/drivers/p4runtime/BUCK
index 09c9bf7..0c9f23d 100644
--- a/drivers/p4runtime/BUCK
+++ b/drivers/p4runtime/BUCK
@@ -1,4 +1,4 @@
-GRPC_VER = '1.3.0'
+GRPC_VER = '1.3.1'
 
 COMPILE_DEPS = [
     '//lib:CORE_DEPS',
diff --git a/drivers/p4runtime/pom.xml b/drivers/p4runtime/pom.xml
index 108f9ee..ff48f14 100644
--- a/drivers/p4runtime/pom.xml
+++ b/drivers/p4runtime/pom.xml
@@ -39,7 +39,7 @@
         <dependency>
             <groupId>io.grpc</groupId>
             <artifactId>grpc-netty</artifactId>
-            <version>1.3.0</version>
+            <version>1.3.1</version>
         </dependency>
 
         <!-- protocols/p4runtime/api missing -->