drop Java 8 support

Author: khvn26

.github/workflows/run-tests.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        java: [ "8", "11", "17", "21" ]
+        java: [ "11", "17", "21" ]
         distribution: [ "zulu", "adopt" ]
 
     steps:

pom.xml

@@ -38,9 +38,11 @@
   </scm>
 
   <properties>
+    <maven.compiler.source>11</maven.compiler.source>
+    <maven.compiler.target>11</maven.compiler.target>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    <java.version>1.11</java.version>
+    <java.version>11</java.version>
     <jacksonVersion>2.15.2</jacksonVersion>
     <lombok.version>1.18.34</lombok.version>
     <slf4j.version>1.7.30</slf4j.version>
@@ -222,8 +224,8 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>3.7.0</version>
         <configuration>
-          <source>1.8</source>
-          <target>1.8</target>
+          <source>11</source>
+          <target>11</target>
           <annotationProcessorPaths>
             <path>
               <groupId>org.projectlombok</groupId>