Update CI to install gems via appraisal

Update CI to install gems via appraisal

Update to Rails 6.1.0

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 80b2b6d..576659f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,5 +36,7 @@ jobs:
           bundle exec appraisal install
       - name: Rubocop
         run: bundle exec rubocop
+      - name: install gems
+        run: bundle exec appraisal bundle
       - name: Run tests
         run: bundle exec appraisal rake
diff --git a/gemfiles/ar_61.gemfile b/gemfiles/ar_61.gemfile
index 3b665c0..07548db 100644
--- a/gemfiles/ar_61.gemfile
+++ b/gemfiles/ar_61.gemfile
@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "activerecord", "~> 6.1.0.rc2"
+gem "activerecord", "~> 6.1.0"
 
 gemspec path: "../"

GitHub sha: 8d160b0b