+ re-aligned min maven version to 3.9.0

Author: q3769

README.md

@@ -21,7 +21,7 @@ _Notes:_
 
 ## Prerequisite
 
-Maven 3.5.4 or better
+Maven 3.9.0 or better
 
 ## Get it...
 

pom.xml

@@ -30,7 +30,7 @@
 
     <groupId>io.github.q3769</groupId>
     <artifactId>semver-maven-plugin</artifactId>
-    <version>20240116.0.202507151828</version>
+    <version>20240116.0.202507152048</version>
     <packaging>maven-plugin</packaging>
 
     <name>semver-maven-plugin</name>
@@ -48,13 +48,13 @@
     </licenses>
 
     <prerequisites>
-        <maven>3.5.4</maven>
+        <maven>3.9.0</maven>
     </prerequisites>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.version>3.9.9</maven.version>
-        <maven.compiler.release>11</maven.compiler.release>
+        <maven.version>3.9.0</maven.version>
+        <maven.compiler.release>8</maven.compiler.release>
     </properties>
 
     <dependencyManagement>
@@ -250,7 +250,7 @@
             <plugin>
                 <groupId>io.github.q3769</groupId>
                 <artifactId>semver-maven-plugin</artifactId>
-                <version>20240116.0.202507151828</version>
+                <version>20240116.0.202507152048</version>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>

src/main/java/q3769/maven/plugins/semver/mojos/FinalizeCurrent.java

@@ -44,7 +44,7 @@ public class FinalizeCurrent extends Updater {
    */
   @Override
   protected Version update(@NonNull Version original) {
-    if (original.preReleaseVersion().isEmpty() && original.buildMetadata().isEmpty()) {
+    if (!original.preReleaseVersion().isPresent() && !original.buildMetadata().isPresent()) {
       logInfo("Current version: %s contains only normal version numbers, so no change.", original);
       return original;
     }

src/main/java/q3769/maven/plugins/semver/mojos/UpdateBuildMetadata.java

@@ -42,10 +42,10 @@ public class UpdateBuildMetadata extends LabelUpdater {
   /**
    * @param version to increment
    * @return incremented semver
-   * @deprecated as build metadata label is not really part of precedence comparison, thus doesn't
-   *     really make sense to be incremented/updated
+   * @deprecated since "20240115.0.0" as build metadata label is not really part of precedence
+   *     comparison, thus doesn't really make sense to be incremented/updated
    */
-  @Deprecated(since = "20240115.0.0")
+  @Deprecated
   @Override
   protected Version incrementLabel(@NonNull Version version) throws MojoFailureException {
     try {