Not use SHOW SHARES [sc-25711]

[alyiwang]

🤔 Why?

The SHOW SHARES will return all inbound/outbound shared databases, also including the inbound shared databases that have not been accepted by the receiver.

🤓 What?

• Not use SHOW SHARES, and use only information_schema instead. This does require the access to the imported databases to be granted to the metaphor role.

🧪 Tested?

tested on metaphor snowflake instance.

☑️ Checks

• My PR contains actual code changes, and I have updated the version number in pyproject.toml.

[github-actions]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
19015	17827	94%	85%	🟢

New Files

No new covered files...

Modified Files

File	Coverage	Status
metaphor/snowflake/extractor.py	86%	🟢
TOTAL	86%	🟢

updated for commit: f7379e1 by action🐍

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.75%. Comparing base (8721868) to head (f7379e1).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #832      +/-   ##
==========================================
+ Coverage   93.56%   93.75%   +0.18%     
==========================================
  Files         206      163      -43     
  Lines       19190    19015     -175     
==========================================
- Hits        17956    17827     -129     
+ Misses       1234     1188      -46     

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