updating Mailjet java version in pom.xml files (#818)

* update pom.xml

Mailjet java version 4.1.1 released today, updating pom.xml to match

* update pom.xml

Mailjet java version 4.1.1 released today, updating pom.xml to match

* update pm.xml

Mailjet java version 4.1.1 released today, updating pom.xml to match

Author: Atanas Damyanliev

appengine/mailjet/pom.xml

@@ -26,7 +26,7 @@
     <relativePath>..</relativePath>
   </parent>
   <properties>
-    <mailjet.version>4.1.0</mailjet.version>
+    <mailjet.version>4.1.1</mailjet.version>
   </properties>
   <dependencies>
     <dependency>

compute/mailjet/pom.xml

@@ -28,7 +28,7 @@
   </parent>
 
   <properties>
-    <mailjet.version>4.1.0</mailjet.version>
+    <mailjet.version>4.1.1</mailjet.version>
   </properties>
 
   <dependencies>

flexible/mailjet/pom.xml

@@ -36,7 +36,7 @@
     <appengine.maven.plugin>1.3.1</appengine.maven.plugin>
     <jetty>9.4.4.v20170414</jetty>
 
-    <mailjet-version>4.1.0</mailjet-version>
+    <mailjet-version>4.1.1</mailjet-version>
   </properties>
 
   <dependencies>