[CI] Upgrade tools/vcpkg to 2025.09.17

[marcalff]

Fixes broken CI for vcpkg

Changes

Please provide a brief description of the changes here.

• Upgrade tools/vcpkg to 2025.09.17
• cppcheck now ignore tools/, so it won't fail in tools/vcpkg
• Ignore warning 4702 now detected by vcpkg in header google/protobuf/arena.h

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.95%. Comparing base (767ef30) to head (4102cd2).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3701   +/-   ##
=======================================
  Coverage   89.95%   89.95%           
=======================================
  Files         225      225           
  Lines        7273     7273           
=======================================
  Hits         6542     6542           
  Misses        731      731           

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