Upgrade Java 21 version in CI image

Closes gh-40411

Author: mhalbritter

Diff for: ci/images/get-jdk-url.sh

@@ -6,7 +6,7 @@ case "$1" in
 		 echo "https://github.com/bell-sw/Liberica/releases/download/17.0.11+10/bellsoft-jdk17.0.11+10-linux-amd64.tar.gz"
 	;;
 	java21)
-	   echo "https://github.com/bell-sw/Liberica/releases/download/21.0.2+14/bellsoft-jdk21.0.2+14-linux-amd64.tar.gz"
+	   echo "https://github.com/bell-sw/Liberica/releases/download/21.0.3+10/bellsoft-jdk21.0.3+10-linux-amd64.tar.gz"
 	;;
 	*)
 		echo $"Unknown java version"