chore: upgrade httpx to 0.28.1

Author: mulka

poetry.lock

@@ -26,7 +26,7 @@ classifiers = [
 
 [tool.poetry.dependencies]
 python = "^3.10"
-httpx = "^0.27.0"             # Concurrency (async) and HTTP requests
+httpx = "^0.28.1"             # Concurrency (async) and HTTP requests
 pydantic = "^2.6.0"           # Type safety and validation
 email-validator = "^2.1.1"    # REQUIRED by pydantic.EmailStr for email format validation
 tenacity = "^8.2.3"           # Resilience and retry logic