Lambdas for testing via Slack

/ussd-ke kenya-prod: https://m2frndfl45yakmli764nzs25zu0axrzk.lambda-url.eu-west-1.on.aws/ /ussd-ke-dev kenya-dev: https://iimtcp2w3xyegvdezoeps4cvvu0yjher.lambda-url.eu-west-1.on.aws/

/ussd-ug uganda-prod: https://fur2kpvit6ko6y3ymobgxozglu0qzgmp.lambda-url.eu-west-1.on.aws/ /ussd-ug-dev uganda-dev: https://dk3q4vkhmtqlln3skxvojkdywm0oqywb.lambda-url.eu-west-1.on.aws/

/ussd-zm zambia-prod: https://o5ykkddjjvtckftmug4j2s4urq0qvwzi.lambda-url.eu-west-1.on.aws/ /ussd-zm-dev zambia-dev: https://6au6hucosky3m6tekcojard4ri0parxb.lambda-url.eu-west-1.on.aws/