MONGOID-5689 Add Rails 7.1 support

.evergreen/config.yml

@@ -744,7 +744,7 @@ buildvariants:
     driver: ["current"]
     mongodb-version: "6.0"
     topology: "standalone"
-    rails: ['7.0']
+    rails: ['7.0', '7.1']
     os: ubuntu-22.04
     fle: helper
   display_name: "${rails}, ${driver}, ${mongodb-version} (FLE ${fle})"
@@ -830,7 +830,7 @@ buildvariants:
     mongodb-version: '6.0'
     topology: standalone
     app-tests: yes
-    rails: ['6.0', '6.1', '7.0']
+    rails: ['6.0', '6.1', '7.0', '7.1']
     os: rhel80
   display_name: "app tests ${driver}, ${ruby}, ${rails}"
   tasks:

.evergreen/config/variants.yml.erb

@@ -115,7 +115,7 @@ buildvariants:
     driver: ["current"]
     mongodb-version: "6.0"
     topology: "standalone"
-    rails: ['7.0']
+    rails: ['7.0', '7.1']
     os: ubuntu-22.04
     fle: helper
   display_name: "${rails}, ${driver}, ${mongodb-version} (FLE ${fle})"
@@ -201,7 +201,7 @@ buildvariants:
     mongodb-version: '6.0'
     topology: standalone
     app-tests: yes
-    rails: ['6.0', '6.1', '7.0']
+    rails: ['6.0', '6.1', '7.0', '7.1']
     os: rhel80
   display_name: "app tests ${driver}, ${ruby}, ${rails}"
   tasks:

mongoid.gemspec

@@ -38,7 +38,7 @@ Gem::Specification.new do |s|
   # Ruby 3.0 requires ActiveModel 6.0 or higher.
   # activemodel 7.0.0 cannot be used due to Class#descendants issue
   # See: https://github.com/rails/rails/pull/43951
-  s.add_dependency("activemodel", ['>=5.1', '<7.1', '!= 7.0.0'])
+  s.add_dependency("activemodel", ['>=5.1', '<7.2', '!= 7.0.0'])
   s.add_dependency("mongo", ['>=2.18.0', '<3.0.0'])
   s.add_dependency("concurrent-ruby", ['>= 1.0.5', '< 2.0'])