Changes to Bank Rate + SONIA + base rates

added the non-success response with the status 500

added the optional property meta/stale_since to the response with the 200 status

added the optional property meta/data_age_days to the response with the 200 status

added the optional property meta/notes to the response with the 200 status

added the optional property meta/period to the response with the 200 status

the response property data/items/IUDAMIH became optional for the status 200

the response property data/items/IUDBEDR became optional for the status 200

the response property data/items/IUDSOIA became optional for the status 200

the response property data/items/date became optional for the status 200

response property data/items/IUDBEDR list-of-types was widened by adding types integer and null to media type application/json of response 200

response property data/items/IUDSOIA list-of-types was widened by adding types integer to media type application/json of response 200

response property data/items/date list-of-types was widened by adding types null to media type application/json of response 200

added subschema #1 subschema #2 to the data/items/IUDAMIH response property anyOf list for the response status 200

added the optional property code to the response with the 401 status

added the optional property code to the response with the 429 status

added the optional property code to the response with the 503 status

added the optional property hint to the response with the 401 status

added the optional property hint to the response with the 429 status

added the optional property hint to the response with the 503 status

added the optional property plan to the response with the 401 status

added the optional property plan to the response with the 429 status

added the optional property plan to the response with the 503 status

added the optional property reason to the response with the 401 status

added the optional property reason to the response with the 429 status

added the optional property reason to the response with the 503 status