Add error handling to API pulls

.github/scripts/update_currencies.py

@@ -5,6 +5,10 @@ import os
 def fetch_currencies():
     response = requests.get('https://restcountries.com/v3.1/all')
     response.raise_for_status()
+    except requests.RequestException as e:
+        print(f"An error occurred: {e}")
+        return []
+        
     countries = response.json()
 
     currencies_list = []