Feature: Bump Tailwind

Because:
* The dependabot bump was previously failing because of an import duplication error.

This commit:
* Remove our layout gradient class, it was causing the build to fail because it [duplicates an import](tailwindlabs/tailwindcss#11473). We were only using this class in one place so I just moved the styles to the element.
* Bump to latest version of Tailwind.

app/javascript/stylesheets/layout.css

@@ -4,10 +4,6 @@
   }
 
   @layer utilities {
-    .gradient {
-      @apply bg-gradient-to-b from-white to-gray-100;
-    }
-
     .highlight-white {
       box-shadow: inset 0 1px 0 0 hsl(0deg 0% 100% / 5%);
     }

app/views/static_pages/home/_success_stories.html.erb

@@ -1,4 +1,4 @@
-<div class="w-full gradient dark:bg-gray-800/30 dark:bg-none">
+<div class="w-full bg-gradient-to-b from-white to-gray-100 dark:bg-gray-800/30 dark:bg-none">
   <div class="page-container py-20">
     <div class="text-center">
       <h2 class="font-medium text-3xl text-gray-800 dark:text-gray-200">Success Stories</h2>

package.json

@@ -63,7 +63,7 @@
     "stimulus-use": "^0.51.3",
     "stimulus-validation": "^1.0.1-beta.3",
     "style-loader": "^3.3.3",
-    "tailwindcss": "^3.2.7",
+    "tailwindcss": "^3.3.2",
     "terser-webpack-plugin": "5",
     "webpack": "5",
     "webpack-assets-manifest": "5",