Update System.Diagnostics.DiagnosticSource package version to 7.0.2

[utpilla]

Following up on #4550

Changes

• Update System.Diagnostics.DiagnosticSource package version to 7.0.2

Merge requirement checklist

• Appropriate CHANGELOG.md files updated for non-trivial changes

[codecov]

Codecov Report

Merging #4576 (8546f38) into main (09399d8) will increase coverage by 0.03%.
The diff coverage is n/a.

❗ Current head 8546f38 differs from pull request most recent head 4af9209. Consider uploading reports for the commit 4af9209 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4576      +/-   ##
==========================================
+ Coverage   85.12%   85.15%   +0.03%     
==========================================
  Files         320      320              
  Lines       12679    12679              
==========================================
+ Hits        10793    10797       +4     
+ Misses       1886     1882       -4     

see 3 files with indirect coverage changes