Fix error in JDK URL regex

Java regex matches the full string by default, so we need
to prepend with .*, and it needs to be non-greedy so that
the optional .tar portion also matches as desired.

src/main/java/org/scijava/launcher/Java.java

@@ -300,7 +300,7 @@ public static void upgrade(BiConsumer<String, Double> subscriber)
 
 		// Create a temp file to house the downloaded Java archive.
 		String prefix = Java.class.getName() + "-";
-		Matcher m = Pattern.compile("((\\.tar)?\\.[^.]*)$").matcher(javaLink);
+		Matcher m = Pattern.compile(".*?((\\.tar)?\\.[^.]*)$").matcher(javaLink);
 		String suffix = m.matches() ? m.group(1) : null;
 		File tmpArchive = Files.createTempFile(prefix, suffix).toFile();
 		tmpArchive.deleteOnExit();