Java version updated

Author: Ivan Kamkin

.github/workflows/maven.yml

@@ -21,7 +21,7 @@ jobs:
       with:
         # Use same in Dockerfile
         distribution: 'corretto'
-        java-version: 8
+        java-version: 11
         cache: 'maven'
 
     - name: Maven Compile

pom.xml

@@ -193,7 +193,7 @@
         </dependency>
     </dependencies>
     <properties>
-        <java.version>1.8</java.version>
+        <java.version>11</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>