feat: relax pyarrow dependency constraint to support versions up to 19.x

[rayzeller]

This change updates the pyarrow dependency from ^14.0.1 to >=14.0.1,<19.0.0 across the main package and affected extensions, allowing users to upgrade to newer pyarrow versions (including 18.1) while maintaining backward compatibility with the current minimum version.

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Important

Relax pyarrow dependency constraint to >=14.0.1,<19.0.0 in three pyproject.toml files.

• Dependency Update:
  • Relax pyarrow version constraint from ^14.0.1 to >=14.0.1,<19.0.0 in pyproject.toml, extensions/connectors/yfinance/pyproject.toml, and extensions/ee/connectors/databricks/pyproject.toml.

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1. extensions/connectors/yfinance/pyproject.toml:13

• Draft comment:
  Relaxed the pyarrow version constraint to '>=14.0.1,<19.0.0'. Please confirm that excluding 19.x (i.e. not allowing 19.0.0 or higher) is intentional.
• Reason this comment was not posted:
  Confidence changes required: 50% <= threshold 50% None

2. extensions/ee/connectors/databricks/pyproject.toml:17

• Draft comment:
  Updated the pyarrow dependency to '>=14.0.1,<19.0.0'. Verify that excluding any 19.x releases is the desired constraint.
• Reason this comment was not posted:
  Confidence changes required: 50% <= threshold 50% None

3. pyproject.toml:30

• Draft comment:
  Changed the pyarrow dependency to '>=14.0.1,<19.0.0'. Ensure that this aligned upper-bound (excluding 19.x) is as intended.
• Reason this comment was not posted:
  Confidence changes required: 50% <= threshold 50% None

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