fix(ruff): suppress noisy 'All checks passed!' on success

[mkanat]

Summary

• Adds --quiet flag to all ruff check invocations (both lint and fix mode)
• Suppresses the "All checks passed!" stderr message that floods CI output for every target
• --quiet still prints diagnostics, just nothing else — so actual lint errors are unaffected

Fixes #753

Test plan

• //test:ruff_should_ignore_generated — PASSED
• //test:ruff_should_ignore_generated_filegroup — PASSED
• //test:ruff_should_ignore_excluded — PASSED
• //test:ruff_machine_output_test — PASSED (SARIF output unaffected)
• //test:ruff_pyi_machine_output_test — PASSED (SARIF output unaffected)
• bazel build --config=lint --output_groups=rules_lint_human //src:all — success
• bazel build --config=lint --output_groups=rules_lint_patch --@aspect_rules_lint//lint:fix //src:all — success

🤖 Generated with Claude Code

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[aspect-workflows]

Bazel 7 (Test)

All tests were cache hits

6 tests (100.0%) were fully cached saving 2s.

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Bazel 8 (Test)

All tests were cache hits

6 tests (100.0%) were fully cached saving 2s.

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Bazel 9 (Test)

All tests were cache hits

6 tests (100.0%) were fully cached saving 2s.

[alexeagle]

thanks!