Fix the SummerBankHolidayTest for England, Wales and Northern Ireland which occasionally failed, because they failed to check for the renaming from August Bank Holiday to Summer Bank Holiday in 1965.
Also, update the tests for these countries to the coding standard introduced in 27c6e8173.
Fix the SummerBankHolidayTest for England, Wales and Northern Ireland which occasionally failed, because they failed to check for the renaming from August Bank Holiday to Summer Bank Holiday in 1965.
Also, update the tests for these countries to the coding standard introduced in 27c6e8173.