core: remove dependency on unused python-magic

Author: the-forest-tree

poetry.lock

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "hrflow"
-version = "4.1.0"
+version = "4.2.0"
 description = "Python hrflow.ai API package"
 authors = ["HrFlow.ai <contact@hrflow.ai>"]
 license = "MIT"
@@ -17,7 +17,6 @@ packages = [{include = "hrflow"}]
 [tool.poetry.dependencies]
 python = "^3.8.1"
 requests = "^2.31.0"
-python-magic = "^0.4.27"
 tqdm = "^4.66.2"
 openpyxl = "^3.1.2"
 pydantic = "^1.10.8"