Change | Using default system protocols for TDS8 on Managed code

[JRahnama]

This simple PR changes the previous behavior of the driver and omits using supported TLS protocols and uses the latest and the most secure TLS version on the client machine on managed code.

[codecov]

Codecov Report

Merging #1678 (c0a1809) into main (4e3aa5e) will decrease coverage by 0.15%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1678      +/-   ##
==========================================
- Coverage   71.54%   71.39%   -0.16%     
==========================================
  Files         291      293       +2     
  Lines       61241    61367     +126     
==========================================
- Hits        43817    43814       -3     
- Misses      17424    17553     +129     

Flag	Coverage Δ
addons	92.38% <ø> (ø)
netcore	74.91% <ø> (-0.18%)	⬇️
netfx	69.27% <ø> (-0.08%)	⬇️

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Impacted Files	Coverage Δ
...core/src/Microsoft/Data/SqlClient/SNI/SNIHandle.cs	42.10% <ø> (+2.10%)	⬆️
...re/src/Microsoft/Data/SqlClient/SNI/SNINpHandle.cs	68.85% <0.00%> (-9.84%)	⬇️
...ata/SqlClient/SqlConnectionTimeoutErrorInternal.cs	41.96% <0.00%> (-9.83%)	⬇️
...ActiveDirectoryAuthenticationTimeoutRetryHelper.cs	56.81% <0.00%> (-6.82%)	⬇️
...rc/Microsoft/Data/SqlClient/SQLFallbackDNSCache.cs	90.62% <0.00%> (-6.25%)	⬇️
.../src/Microsoft/Data/SqlTypes/SqlTypeWorkarounds.cs	71.42% <0.00%> (-4.77%)	⬇️
.../src/Microsoft/Data/SqlClient/SNI/SNIMarsHandle.cs	87.89% <0.00%> (-4.49%)	⬇️
...nt/src/Microsoft/Data/ProviderBase/TimeoutTimer.cs	71.42% <0.00%> (-3.58%)	⬇️
...e/src/Microsoft/Data/SqlClient/SNI/SNITcpHandle.cs	60.62% <0.00%> (-2.34%)	⬇️
...Client/Reliability/Common/SqlRetryLogicProvider.cs	89.13% <0.00%> (-2.18%)	⬇️
... and 13 more

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