Bquest

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- support Python 3.12
- replace `^` by `>=` in dependency specifications

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- update dependencies

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- fix version 0.3.2 by adding default case for sql_with_substitutions

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- Add condition for string substitution so that empty substitutions together with sqls,
that contain curly brackets won't fail

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- Manually bump pandas-gbq version

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- Raise pandas to 2.0