Fix: Swale, UK

[dt215git]

Fixes #3492

Testing source swale_gov_uk ...
  found 4 entries for Swale House
    2025-01-16 : Recycling [mdi:recycle]
    2025-01-16 : Food [mdi:food-apple]
    2025-01-23 : Refuse [mdi:trash-can]
    2025-01-23 : Food [mdi:food-apple]
  found 4 entries for 1 Harrier Drive
    2025-01-16 : Refuse [mdi:trash-can]
    2025-01-16 : Food [mdi:food-apple]
    2025-01-23 : Recycling [mdi:recycle]
    2025-01-23 : Food [mdi:food-apple]
  found 5 entries for garden waste test
    2025-01-16 : Garden [mdi:leaf]
    2025-01-16 : Refuse [mdi:trash-can]
    2025-01-16 : Food [mdi:food-apple]
    2025-01-23 : Recycling [mdi:recycle]
    2025-01-23 : Food [mdi:food-apple]

Website has a fairly aggressive limit of request frequency, so running the test cases, or restarting HA a lot of times is quick succession, may end up generating 429 Too Many Requests messages. The headers don't indicate what the acceptable request rate is.

[5ila5]

Thanks for your contribution