Add some commits into .git-blame-ignore-revs

[ydah]

How about https://github.com/rubocop/rubocop-rspec/pull/1906/commits/089491fb1fa173145f8e6eb1b511d4a7a1bf28ff and ce09cb2b25b9f3778bf032d0caaa862da6635b54 ?

---

Before submitting the PR make sure the following are checked:

• [x] Feature branch is up-to-date with master (if not - rebase it).
• [x] Squashed related commits together.
• [-] Added tests.
• [-] Updated documentation.
• [-] Added an entry to the CHANGELOG.md if the new code introduces user-observable changes.
• [x] The build (bundle exec rake) passes (be sure to run this locally, since it may produce updated documentation that you will need to commit).