fix: Release shift in case of out of gold (#740)

src/inventory/vendor.py

@@ -118,6 +118,7 @@ def buy_item(template_name: str, quantity: int = 1, img: np.ndarray = None, shif
             wait(0.4, 0.6)
             if is_visible(ScreenObjects.NotEnoughGold):
                 Logger.warning(f"Out of gold, could not purchase {template_name}")
+                keyboard.send('shift', do_release=True)
                 keyboard.send("esc")
                 return False
             keyboard.send('shift', do_release=True)
@@ -138,4 +139,4 @@ def buy_item(template_name: str, quantity: int = 1, img: np.ndarray = None, shif
             return False
 
     Logger.error(f"buy_item: Desired item {template_name} not found")
-    return False
+    return False