8276550: Use SHA256 hash in build.tools.depend.Depend

Reviewed-by: andrew
Backport-of: afb502e28a81183cef76a7e60fc052e8cad3afe3

make/jdk/src/classes/build/tools/depend/Depend.java

@@ -101,7 +101,7 @@ public void init(JavacTask jt, String... args) {
             private final MessageDigest apiHash;
             {
                 try {
-                    apiHash = MessageDigest.getInstance("MD5");
+                    apiHash = MessageDigest.getInstance("SHA-256");
                 } catch (NoSuchAlgorithmException ex) {
                     throw new IllegalStateException(ex);
                 }