Fix flaky test TestWaitUntilResourceAvailable

[sfc-gh-knozderko]

Description

Fix flaky test TestWaitUntilResourceAvailable

Checklist

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

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.37%. Comparing base (0983d94) to head (c718ea3).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## pool/SNOW-860872-connection-pool #907 +/- ## ==================================================================== + Coverage 82.31% 82.37% +0.06% ==================================================================== Files 104 104 Lines 9876 9876 Branches 912 912 ==================================================================== + Hits 8129 8135 +6 + Misses 1496 1491 -5 + Partials 251 250 -1 ```

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