Bump snowflake-connector-python in /docker/snowflake

Bumps [snowflake-connector-python](https://github.com/snowflakedb/snowflake-connector-python) from 3.12.1 to 3.12.2.
- [Release notes](https://github.com/snowflakedb/snowflake-connector-python/releases)
- [Commits](snowflakedb/snowflake-connector-python@v3.12.1...v3.12.2)

---
updated-dependencies:
- dependency-name: snowflake-connector-python
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>