build: downgrade plugins to versions compatible with JitPack Maven 3.5.x

Author: mrmx

pom.xml

@@ -56,10 +56,11 @@
         <jsr305.version>3.0.2</jsr305.version>
 
         <junit.version>5.11.4</junit.version>
-        <maven.compiler.plugin.version>3.13.0</maven.compiler.plugin.version>
-        <maven.surefire.plugin.version>3.5.2</maven.surefire.plugin.version>
-        <maven.source.plugin.version>3.3.1</maven.source.plugin.version>
-        <maven.javadoc.plugin.version>3.10.1</maven.javadoc.plugin.version>
+        <!-- Keep plugins compatible with the Maven version bundled by JitPack (~3.5.x). -->
+        <maven.compiler.plugin.version>3.11.0</maven.compiler.plugin.version>
+        <maven.surefire.plugin.version>3.2.5</maven.surefire.plugin.version>
+        <maven.source.plugin.version>3.3.0</maven.source.plugin.version>
+        <maven.javadoc.plugin.version>3.6.3</maven.javadoc.plugin.version>
     </properties>
 
     <dependencies>