Update httpx dependency version in pyproject.toml

Changed httpx version specification from '^0.27.0' to '^0.27' for improved compatibility with patch releases.

Author: JR-1991

pyproject.toml

@@ -13,7 +13,7 @@ packages = [{ include = "pyDataverse" }]
 
 [tool.poetry.dependencies]
 python = "^3.8.1"
-httpx = "^0.27.0"
+httpx = "^0.27"
 jsonschema = "^4.21.1"
 
 [tool.poetry.group.dev]