Pin StandardRB to exact version 1.50.0

Use exact version instead of pessimistic constraint to ensure
consistency between local development and CI environments

Author: raghubetina

Gemfile

@@ -6,7 +6,7 @@ gemspec
 
 group :quality do
   gem "simplecov", "~> 0.22", require: false
-  gem "standard", "~> 1.0"
+  gem "standard", "1.50.0"
 end
 
 group :development do

coverage/.resultset.json

@@ -222,6 +222,6 @@
         }
       }
     },
-    "timestamp": 1753124511
+    "timestamp": 1753130664
   }
 }

coverage/index.html

@@ -13,7 +13,7 @@
       <img src="./assets/0.13.2/loading.gif" alt="loading"/>
     </div>
     <div id="wrapper" class="hide">
-      <div class="timestamp">Generated <abbr class="timeago" title="2025-07-21T14:01:51-05:00">2025-07-21T14:01:51-05:00</abbr></div>
+      <div class="timestamp">Generated <abbr class="timeago" title="2025-07-21T15:44:24-05:00">2025-07-21T15:44:24-05:00</abbr></div>
       <ul class="group_tabs"></ul>
 
       <div id="content">