Pool/snow 860872 connection pool

[sfc-gh-knozderko]

Description

Please explain the changes you made here.

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[bot]]

Codecov Report

Attention: Patch coverage is 94.27609% with 51 lines in your changes are missing coverage. Please review.

Project coverage is 82.49%. Comparing base (22d32dd) to head (7db9d54). Report is 48 commits behind head on master.

Files	Patch %	Lines
Snowflake.Data/Core/Session/SessionPool.cs	93.31%	10 Missing and 11 partials :warning:
...Data/Core/Session/SFSessionHttpClientProperties.cs	90.00%	7 Missing and 3 partials :warning:
Snowflake.Data/Client/SnowflakeDbConnectionPool.cs	92.85%	2 Missing and 2 partials :warning:
...flake.Data/Core/Session/SessionOrCreationTokens.cs	82.60%	2 Missing and 2 partials :warning:
Snowflake.Data/Core/Session/WaitingQueue.cs	92.59%	3 Missing and 1 partial :warning:
...ion/SessionPropertiesWithDefaultValuesExtractor.cs	96.42%	1 Missing and 2 partials :warning:
...owflake.Data/Core/Session/ConnectionPoolManager.cs	97.75%	1 Missing and 1 partial :warning:
...flake.Data/Core/Session/SessionPoolEventHandler.cs	80.00%	2 Missing :warning:
Snowflake.Data/Core/Session/SFSession.cs	93.75%	0 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #913 +/- ## ========================================== - Coverage 83.56% 82.49% -1.07% ========================================== Files 89 104 +15 Lines 9155 9916 +761 Branches 837 917 +80 ========================================== + Hits 7650 8180 +530 - Misses 1278 1488 +210 - Partials 227 248 +21 ```

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