Add Ruby 3.1 and Rails 7 to CI (#775)

.github/workflows/build.yml

@@ -12,14 +12,27 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-20.04]
-        ruby: [3.0, 2.7, 2.6, jruby-9.1.17.0, truffleruby]
+        ruby: ['3.0', 2.7, 2.6, jruby-9.1.17.0, truffleruby]
         gemfile: [norails, rails_4.2, rails_4.2_mongoid_5, rails_5.2, rails_6.1]
+        redis-version: [6]
+        mongodb-version: [5]
+        include:
+          - ruby: '3.0'
+            gemfile: rails_6.1
+            os: ubuntu-20.04
+            redis-version: 6
+            mongodb-version: 5
+          - ruby: 3.1
+            gemfile: rails_7.0
+            os: ubuntu-20.04
+            redis-version: 6
+            mongodb-version: 5
         exclude:
-        - ruby: 3.0
+        - ruby: '3.0'
           gemfile: rails_5.2
-        - ruby: 3.0
+        - ruby: '3.0'
           gemfile: rails_4.2
-        - ruby: 3.0
+        - ruby: '3.0'
           gemfile: rails_4.2_mongoid_5
         - ruby: 2.7
           gemfile: rails_5.2
@@ -43,8 +56,6 @@ jobs:
           gemfile: rails_4.2_mongoid_5
         - ruby: truffleruby
           gemfile: rails_5.2
-        redis-version: [6]
-        mongodb-version: [5]
         allow_failures:
           - false
     env:

gemfiles/rails_7.0.gemfile

@@ -0,0 +1,14 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "sqlite3", "~> 1.4", platforms: :ruby
+gem "rails", "~> 7.0.1"
+gem "after_commit_everywhere", "~> 1.0"
+gem "mongoid", "~>7", ">= 7.3.4"
+gem "sequel"
+gem "dynamoid", "~>3.3", platforms: :ruby
+gem "aws-sdk-dynamodb", "~> 1"
+gem "redis-objects"
+
+gemspec path: "../"