chore: update echidna submodule to latest remote

hyperpolymath · claude · hyperpolymath · commit 8db39f84ccae · 2026-03-28T07:48:39.000Z
Co-Authored-By: Claude Opus 4.6 (1M context) &lt;noreply@anthropic.com&gt;
diff --git a/satellites/neurosymbolic/echidna b/satellites/neurosymbolic/echidna
@@ -1 +1 @@
-Subproject commit 7eb04e305ecf6b2a573b16f153d2d992ea8a8968
+Subproject commit cb5eb6cc214033ec312f71b92b5411ef97f1cd73
