improve test setup with factory bot

Gemfile.lock

@@ -60,8 +60,6 @@ GEM
       minitest (>= 5.1)
       tzinfo (~> 2.0)
       zeitwerk (~> 2.3)
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
     administrate (0.16.0)
       actionpack (>= 5.0)
       actionview (>= 5.0)
@@ -85,14 +83,6 @@ GEM
       msgpack (~> 1.0)
     builder (3.2.4)
     byebug (11.1.3)
-    capybara (3.35.3)
-      addressable
-      mini_mime (>= 0.1.3)
-      nokogiri (~> 1.8)
-      rack (>= 1.6.0)
-      rack-test (>= 0.6.3)
-      regexp_parser (>= 1.5, < 3.0)
-      xpath (~> 3.2)
     coderay (1.1.3)
     concurrent-ruby (1.1.9)
     crass (1.0.6)
@@ -114,6 +104,13 @@ GEM
     enumerize (2.4.0)
       activesupport (>= 3.2)
     erubi (1.10.0)
+    factory_bot (6.2.0)
+      activesupport (>= 5.0.0)
+    factory_bot_rails (6.2.0)
+      factory_bot (~> 6.2.0)
+      railties (>= 5.0.0)
+    faker (2.18.0)
+      i18n (>= 1.6, < 2)
     ffi (1.15.3)
     globalid (0.5.2)
       activesupport (>= 5.0)
@@ -182,7 +179,6 @@ GEM
     pry-byebug (3.9.0)
       byebug (~> 11.0)
       pry (~> 0.13.0)
-    public_suffix (4.0.6)
     puma (5.4.0)
       nio4r (~> 2.0)
     pundit (2.1.0)
@@ -318,8 +314,6 @@ GEM
     websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
-    xpath (3.2.0)
-      nokogiri (~> 1.8)
     zeitwerk (2.4.2)
 
 PLATFORMS
@@ -330,11 +324,12 @@ DEPENDENCIES
   administrate-field-active_storage
   annotate
   bootsnap (>= 1.4.4)
-  capybara
   devise
   devise-i18n
   dotenv-rails
   enumerize
+  factory_bot_rails (~> 6.2)
+  faker (~> 2.18)
   graphql
   graphql_playground-rails
   image_processing (~> 1.12)