fix: system-wide deadlock (#1905)

Signed-off-by: tomaioo <203048277+tomaioo@users.noreply.github.com>
Co-authored-by: Mads Jon Nielsen <madsjon@gmail.com>

Author: tomaioo

src/mutex.ts

@@ -16,8 +16,11 @@ export class Mutex {
     static async exclusive (key: string, cb: () => Promise<void>) {
         await Mutex.waitForLock(key);
         Mutex.locks.add(key);
-        await cb();
-        Mutex.locks.delete(key);
+        try {
+            await cb();
+        } finally {
+            Mutex.locks.delete(key);
+        }
     }
 
 }