Refactor handle_response to catch specific JSONDecodeError

Replaced `except Exception:` with `except json.JSONDecodeError:` when
parsing `response.json()` to avoid swallowing unrelated errors and to
be explicit about the expected failure case (HTML/plaintext fallback).

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Author: fderuiter

src/imednet/core/http/handlers.py

@@ -4,6 +4,8 @@
 
 from __future__ import annotations
 
+import json
+
 import httpx
 
 from imednet.errors import (
@@ -33,7 +35,7 @@ def handle_response(response: httpx.Response) -> httpx.Response:
         status = response.status_code
         try:
             body = response.json()
-        except Exception:
+        except json.JSONDecodeError:
             body = response.text
         exc_cls = STATUS_TO_ERROR.get(status)
         if exc_cls: