Replace factory_girl_rails with factory_bot_rails

I've followed the [upgrade guide](https://github.com/thoughtbot/factory_bot/blob/4-9-0-stable/UPGRADE_FROM_FACTORY_GIRL.md) and ran these two commands:

```
grep -e FactoryGirl **/*.rake **/*.rb -s -l | xargs sed -i "" "s|FactoryGirl|FactoryBot|"
grep -e factory_girl **/*.rake **/*.rb -s -l | xargs sed -i "" "s|factory_girl|factory_bot|"
```

Signed-off-by: Rémy Coutable <remy@rymai.me>

2 files changed, 2 insertions, 2 deletions

diff --git a/spec/factories/gitaly/commit.rb b/spec/factories/gitaly/commit.rb
index e7966cee77b..5034c3d0e48 100644
--- a/spec/factories/gitaly/commit.rb
+++ b/spec/factories/gitaly/commit.rb
@@ -1,4 +1,4 @@
-FactoryGirl.define do
+FactoryBot.define do
   sequence(:gitaly_commit_id) { Digest::SHA1.hexdigest(Time.now.to_f.to_s) }
 
   factory :gitaly_commit, class: Gitaly::GitCommit do
diff --git a/spec/factories/gitaly/commit_author.rb b/spec/factories/gitaly/commit_author.rb
index 341873a2002..aaf634ce08b 100644
--- a/spec/factories/gitaly/commit_author.rb
+++ b/spec/factories/gitaly/commit_author.rb
@@ -1,4 +1,4 @@
-FactoryGirl.define do
+FactoryBot.define do
   factory :gitaly_commit_author, class: Gitaly::CommitAuthor do
     skip_create