Fix SyntaxError in async_get_config (except TypeError, ValueError)

[ottes]

Summary

custom_components/grocy/grocy_data.py line 129 uses Python 2 exception syntax:

except TypeError, ValueError:

This is invalid in Python 3 and raises a SyntaxError when the module is compiled/imported:

  File ".../grocy_data.py", line 129
    except TypeError, ValueError:
           ^^^^^^^^^^^^^^^^^^^^^
SyntaxError: multiple exception types must be parenthesized

Because this is a module-level compile error, it breaks the import of grocy_data.py entirely, which breaks setup of the whole Grocy integration as soon as Home Assistant (re)loads it - not just the STOCK_DUE_SOON_DAYS code path this except belongs to.

This looks like it was introduced together with the STOCK_DUE_SOON_DAYS / stock_due_soon_days lowercase-fallback handling in async_get_config (related to #44 / #45).

Fix

Parenthesize the exception tuple, as required by Python 3:

except (TypeError, ValueError):

Testing

• python3 -c "import ast; ast.parse(open('custom_components/grocy/grocy_data.py').read())" now succeeds (previously raised the SyntaxError above).
• One-line change, no behavior change beyond fixing the crash.