Fix Geo::LogCursor::Daemon spec

What does this MR do and why?

Fix Geo::LogCursor::Daemon spec

• sleep method was renamed, without updating the stub. Leading to slow spec times

References

Method was renamed in b044f855

Closes https://gitlab.com/gitlab-org/quality/test-failure-issues/-/issues/1886

How to set up and validate locally

1. Run bundle exec rspec -r spec_helper ee/spec/lib/gitlab/geo/log_cursor/daemon_spec.rb:93 against master and check the timing
2. Run bundle exec rspec -r spec_helper ee/spec/lib/gitlab/geo/log_cursor/daemon_spec.rb:93 against this branch and check the timing

MR acceptance checklist

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