[projmgr] Update debug-adapters registry and schema retrieval workflow

[grasci-arm]

Address Open-CMSIS-Pack/cmsis-toolbox#384

[github-actions]

Test Results

    3 files     21 suites   14m 3s ⏱️
  422 tests   422 ✅ 0 💤 0 ❌
1 266 runs  1 266 ✅ 0 💤 0 ❌

Results for commit 1595b82.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.68%. Comparing base (b622f1e) to head (1595b82).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2204   +/-   ##
=======================================
  Coverage   66.68%   66.68%           
=======================================
  Files         181      181           
  Lines       38585    38585           
  Branches    22612    22612           
=======================================
  Hits        25730    25730           
  Misses       8086     8086           
  Partials     4769     4769           

Flag	Coverage Δ
projmgr-cov	80.82% <ø> (ø)

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