build: update vaadin version to 14.11.11

Author: paodb

pom.xml

@@ -9,7 +9,7 @@
  <description>Integration of google-map for Vaadin platform</description>
 
  <properties>
- <vaadin.version>14.10.3</vaadin.version>
+ <vaadin.version>14.11.11</vaadin.version>
 
  <maven.compiler.source>1.8</maven.compiler.source>
  <maven.compiler.target>1.8</maven.compiler.target>