SNOW-2161711: Modify permission check for .toml config file

[sfc-gh-ext-simba-lf]

Description

Modify permission check for .toml config file

Checklist

• Code compiles correctly
• Code is formatted according to Coding Conventions
• Created tests which fail without the change (if possible)
• All tests passing (dotnet test)
• Extended the README / documentation, if necessary
• Provide JIRA issue id (if possible) or GitHub issue id in PR name

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
2733	1	2732	111

View the top 1 failed test(s) by shortest run time

Snowflake.Data.Tests.IntegrationTests.ConnectionMultiplePoolsAsyncIT::TestMinPoolSizeAsync

Stack Traces | 0.445s run time

at Snowflake.Data.Tests.IntegrationTests.ConnectionMultiplePoolsAsyncIT.TestMinPoolSizeAsync() in .../snowflake-connector-net/snowflake-connector-net/Snowflake.Data.Tests/IntegrationTests/ConnectionMultiplePoolsAsyncIT.cs:line 132
   at NUnit.Framework.Internal.TaskAwaitAdapter.GenericAdapter`1.BlockUntilCompleted()
   at NUnit.Framework.Internal.MessagePumpStrategy.NoMessagePumpStrategy.WaitForCompletion(AwaitAdapter awaiter)
   at NUnit.Framework.Internal.AsyncToSyncAdapter.Await(Func`1 invoke)
   at NUnit.Framework.Internal.Commands.TestMethodCommand.RunTestMethod(TestExecutionContext context)
   at NUnit.Framework.Internal.Commands.TestMethodCommand.Execute(TestExecutionContext context)
   at NUnit.Framework.Internal.Commands.BeforeAndAfterTestCommand.<>c__DisplayClass1_0.<Execute>b__0()
   at NUnit.Framework.Internal.Commands.DelegatingTestCommand.RunTestMethodInThreadAbortSafeZone(TestExecutionContext context, Action action)

1)    at Snowflake.Data.Tests.IntegrationTests.ConnectionMultiplePoolsAsyncIT.TestMinPoolSizeAsync() in .../snowflake-connector-net/snowflake-connector-net/Snowflake.Data.Tests/IntegrationTests/ConnectionMultiplePoolsAsyncIT.cs:line 132

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