Challenge: Deduplicate a Customer List

You are given a list of customer records that contains duplicate entries. Each customer is represented as a dictionary with two fields:

• name — the customer's full name;
• email — the email address provided by the customer.

Your goal is to remove duplicate records using a simple matching rule.

Follow these steps:

1. Two records are considered duplicates if their email fields match exactly.
2. Create an empty dictionary named unique_customers, where keys are email addresses and values are customer dictionaries.
3. Loop through the input list customers and add only the first occurrence of each email to unique_customers.
4. Store the deduplicated list in a new variable named deduplicated_list, which should contain only the unique customer dictionaries (values of unique_customers).

Make sure both unique_customers and deduplicated_list are declared and contain the correct deduplicated data.