SNOW-2161716: Raise error if the config file is writable by others

[sfc-gh-gmerticariu]

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1. What GitHub issue is this PR addressing? Make sure that there is an accompanying issue to your PR.

   Fixes SNOW-2161716. When the configurations.toml is writable by others we open ourselves to credentials tampering. This diff checks the write permissions of the file and raises and error in case the file is writable by group or others.

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   • I am adding a new automated test(s) to verify correctness of my new code
   • I am adding new logging messages
   • I am adding a new telemetry message
   • I am modifying authorization mechanisms
   • I am adding new credentials
   • I am modifying OCSP code
   • I am adding a new dependency

3. Please describe how your code solves the related issue.

   Please write a short description of how your code change solves the related issue.

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[sfc-gh-mmishchenko]

LGTM, we'll just keep it as for now without an approval to prevent a an accidental merging, since it's BCR and should be scheduled properly.