Set next MDS version number to 7.0.0

[paulmedynski]

Description

Updated the default MDS version number to 7.0.0 in anticipation of the next MDS major release.

[Copilot]

Pull Request Overview

Updates the default MDS (Microsoft.Data.SqlClient) version number from 6.1.0 to 7.0.0 in preparation for the next major release.

• Version bump from 6.1.0 to 7.0.0 indicating a major release

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.77%. Comparing base (55cc333) to head (58dfaeb).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3570      +/-   ##
==========================================
+ Coverage   59.44%   67.77%   +8.33%     
==========================================
  Files         268      274       +6     
  Lines       62160    62478     +318     
==========================================
+ Hits        36950    42344    +5394     
+ Misses      25210    20134    -5076     

Flag	Coverage Δ
addons	90.82% <ø> (?)
netcore	72.89% <ø> (+10.68%)	⬆️
netfx	66.73% <ø> (+3.43%)	⬆️

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