Update dependency sqlalchemy-cockroachdb to v2.0.3

This MR contains the following updates:

Package	Update	Change
sqlalchemy-cockroachdb	patch	==2.0.2 -> ==2.0.3

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Release Notes

cockroachdb/sqlalchemy-cockroachdb (sqlalchemy-cockroachdb)

v2.0.3

Compare Source

June 10, 2025

• Add support for READ COMMITTED transaction isolation (see README.read_committed.md)
• Add column comment to get_columns method (#​253), thanks to @​dotan-mor
• Fix autogenerate with ON UPDATE / DELETE (#​258, #​262), thanks to @​idumitrescu-dn
• Improve support for table/column comments (via SQLA 2.0.36)
• Add nested transaction support (#​267), thanks to @​mfmarche

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