feat: reproduced the uppercase grants of column names with reserved keywords

[maximmasiutin]

Reproduces #246

[maximmasiutin]

@petoju all tests passed; I made case-insensitive comparison for grants and removed conversion of grants to uppercase because it gave access denied for binary collation; I also added a test for SELECT and column-level grants to illustrate the issue; this test passes.

[petoju]

@maximmasiutin thanks! However, for some reason, SHASUM check is failing and I'm going on vacation. I message terraform-registry few days ago and I have no idea, what's wrong there... I'll try more debugging and hopefully find some issue.

[petoju]

Ah, so this time, the sync has worked - now, 3.0.84 is released with your changes.

[maximmasiutin]

Thank you very much! I run terraform init -upgrade to use the newest 3.0.84 and then column-level grants started to work properly - the issue is resolved, thank you for the prompt action!