fix(update-command): un-ignore test_update by fixing 3 real bugs

test_update was skipped for a stale reason; running it uncovered three
distinct bugs it was actually catching:

- ApplicationTester::run never restored SHELL_VERBOSITY after
  Application::configureIO mutates it, so one dataset's -vv verbosity
  leaked into later runs sharing the process (Symfony's tester restores
  it in a finally block; the port dropped that).
- Installer::do_install built its RepositorySet with a hardcoded empty
  temporary_constraints map instead of self.temporary_constraints, so
  --with never actually constrained the resolver.
- BumpCommand was missing a <warning> tag pair around one of its output
  lines.

0 files changed, 0 insertions, 0 deletions