ci: ignore failures on Ninja summary (#26994)

Co-authored-by: John Kleinschmidt <[email protected]>

.circleci/config.yml

@@ -893,6 +893,8 @@ step-ninja-summary: &step-ninja-summary
   run:
     name: Print ninja summary
     command: |
+      set +e
+      set +o pipefail
       python depot_tools/post_build_ninja_summary.py -C src/out/Default
 
 step-ninja-report: &step-ninja-report