Update to 1.16.5, Java 21

Only one Giants user (of ca. 30) doesn't meet the requirements.
The vast majority of servers do: https://bstats.org/global/bukkit

pom.xml

@@ -5,7 +5,7 @@
   <version>2.0.12-SNAPSHOT</version>
 
   <properties>
-    <maven.compiler.release>17</maven.compiler.release>
+    <maven.compiler.release>21</maven.compiler.release>
     <jarsigner.keystore>${project.basedir}/keystore.jks</jarsigner.keystore>
     <jarsigner.alias>mykey</jarsigner.alias>
     <jarsigner.storepass>123456</jarsigner.storepass>
@@ -28,7 +28,7 @@
     <dependency>
       <groupId>org.spigotmc</groupId>
       <artifactId>spigot-api</artifactId>
-      <version>1.14.4-R0.1-SNAPSHOT</version>
+      <version>1.16.5-R0.1-SNAPSHOT</version>
       <scope>provided</scope>
       <!-- fix vulnerabilities complaints -->
       <exclusions>

src/main/resources/plugin.yml

@@ -1,10 +1,12 @@
 name: Giants
 version: ${project.version}
-api-version: 1.14
-main: eu.m724.giants.GiantsPlugin
+
 author: Minecon724
 website: https://www.spigotmc.org/resources/giants.99600/
+
+api-version: 1.16
 load: STARTUP
+main: eu.m724.giants.GiantsPlugin
 
 commands:
   giants: