ci: temporarily disable fail-fast for the tests matrix

Lets the Windows and Linux test jobs both finish while the agent identity
conformance tests are expected to fail. To be reverted before the pull
request leaves draft status.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: CBenoit

.github/workflows/ci.yml

@@ -202,6 +202,7 @@ jobs:
     needs: [preflight]
     runs-on: ${{ matrix.runner }}
     strategy:
+      fail-fast: false
       matrix:
         arch: [x64]
         os: [windows, linux]