Release v5.3.0-alpha1 (#37661)

* Bump version to 5.3.0-alpha1

* Dist

* Add docs versions updates

* Update note in homepage hero

Co-authored-by: Mark Otto <markdotto@gmail.com>

site/content/docs/5.3/helpers/text-truncation.md

@@ -0,0 +1,23 @@
+---
+layout: docs
+title: Text truncation
+description: Truncate long strings of text with an ellipsis.
+group: helpers
+toc: false
+---
+
+For longer content, you can add a `.text-truncate` class to truncate the text with an ellipsis. **Requires `display: inline-block` or `display: block`.**
+
+{{< example >}}
+<!-- Block level -->
+<div class="row">
+  <div class="col-2 text-truncate">
+    This text is quite long, and will be truncated once displayed.
+  </div>
+</div>
+
+<!-- Inline level -->
+<span class="d-inline-block text-truncate" style="max-width: 150px;">
+  This text is quite long, and will be truncated once displayed.
+</span>
+{{< /example >}}