fix(launcher): Correct intended release file property to use for JSA suffixes

As discussed in jruby#9127 (comment) this isn't perfect; however gets closer to the internal compatibility matching the JVM seems to do when loading JSAs at https://github.com/openjdk/jdk21u/blob/3c0530fd5f9615941144d8ac89786ce699027b51/src/hotspot/share/cds/filemap.cpp#L1341-L1349 (JDK 21)

Signed-off-by: Chad Wilson <29788154+chadlwilson@users.noreply.github.com>
(cherry picked from commit 250080a)

Author: chadlwilson

bin/jruby.sh

@@ -543,7 +543,7 @@ if [ -f "$JAVA_HOME/release" ]; then
 
         case $name in
             (JAVA_VERSION) unquote "$value" && java_version=$REPLY ;;
-            (JAVA_RELEASE_VERSION) unquote "$value" && java_runtime_version=$REPLY ;;
+            (JAVA_RUNTIME_VERSION) unquote "$value" && java_runtime_version=$REPLY ;;
         esac
     done < "$JAVA_HOME"/release
     unset line name value