Require Java 21

Author: tinevez

pom.xml

@@ -89,7 +89,11 @@
 		<!-- NB: Deploy releases to the SciJava Maven repository. -->
 		<releaseProfiles>sign,deploy-to-scijava</releaseProfiles>
 
-		<TrackMate.version>8.1.0</TrackMate.version>
+	    <!-- TrackMate >=8 requires Java 21 -->			
+	    <scijava.jvm.version>21</scijava.jvm.version>
+	    <scijava.jvm.build.version>[21,)</scijava.jvm.build.version>
+
+		<TrackMate.version>8.1.1-SNAPSHOT</TrackMate.version>
 	</properties>
 
 	<dependencies>