Update HyperDebug firmware URL to work around 404

- Take the URL/checksum from Opentitan's Earlygrey-Prod-M4 tag

Change-Id: I959fe119adb894a9e0ada7efbddcc70d89c74910
diff --git a/WORKSPACE b/WORKSPACE
index 9eb984c..f81dd25 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -114,6 +114,6 @@
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_file")
 http_file(
     name = "hyperdebug_firmware",
-    urls = ["https://storage.googleapis.com/aoa-recovery-test-images/hyperdebug_v2.0.20491-956ccf530.bin"],
-    sha256 = "e9c93d2935b9b6a571b547f20fe6177c48a909535d87533b7a0c64fb049bd643",
+    urls = ["https://github.com/lowRISC/hyperdebug-firmware/releases/download/20240621_01/hyperdebug-firmware.tar.gz"],
+    sha256 = "649a8cd6d183bc3fb286ea5895c752cfec3aa29b9990f44bb9e7621c0414c7de",
 )