adding changelog

Author: TomJaeger

docs/installation/changelog.md

@@ -8,6 +8,34 @@
 -->
 # ExpressionEngine v7 Change Log
 
+## Version 7.5.22
+(Release: April 21st, 2026)
+<div class="max-w-7xl mx-autotext-center">
+<div class="space-y-8 sm:space-y-12">
+    <ul role="list" class="mx-auto grid grid-cols-2 gap-x-4 gap-y-1 sm:grid-cols-4 md:gap-x-6 lg:max-w-5xl lg:gap-x-8 lg:gap-y-1 xl:grid-cols-5">
+    </ul>
+</div>
+</div>
+
+**Enhancements** 🚀
+
+- Added `submit_to` support in `exp:consent:form` for `site_index` and `action_id` targets, improving consent form posting flexibility [#5193](https://github.com/ExpressionEngine/ExpressionEngine/pull/5193)
+- Added `email_as_username` support to member registration forms so username can be derived from email when configured [#5133](https://github.com/ExpressionEngine/ExpressionEngine/pull/5133)
+- Added Live Preview compatibility token header (`EE-Live-Preview-Token`) for environments that strip Authorization headers [#5223](https://github.com/ExpressionEngine/ExpressionEngine/pull/5223)
+
+**Bug Fixes** 💃🐛
+
+- Resolved an issue where Live Preview could fail silently when the Authorization header was unavailable by improving token/header handling and error behavior [#5184](https://github.com/ExpressionEngine/ExpressionEngine/pull/5184) [#5223](https://github.com/ExpressionEngine/ExpressionEngine/pull/5223)
+- Resolved file picker drag-and-drop uploads returning incorrect CSRF/404-style failures for oversized requests; upload limit errors are now surfaced correctly [#5215](https://github.com/ExpressionEngine/ExpressionEngine/pull/5215)
+- Resolved Pro Search filtered result issues by disabling entry SQL caching during filter processing and restoring it afterward [#4985](https://github.com/ExpressionEngine/ExpressionEngine/pull/4985)
+- Resolved CKEditor/Pro Search word concatenation caused by HTML stripping in keyword parsing [#5200](https://github.com/ExpressionEngine/ExpressionEngine/pull/5200)
+- Added missing translation strings for two Debug jump menu items [#5212](https://github.com/ExpressionEngine/ExpressionEngine/pull/5212)
+
+**Developers** 💻
+
+- Fixed PHP deprecation warnings by declaring PDO `MYSQL_ATTR_*` database driver properties used by config-driven options [#5217](https://github.com/ExpressionEngine/ExpressionEngine/pull/5217)
+- Added/updated automated coverage around Live Preview token handling, member email-as-username fallback behavior, consent form submit targets, and Pro Search filtering behavior [#5223](https://github.com/ExpressionEngine/ExpressionEngine/pull/5223) [#5133](https://github.com/ExpressionEngine/ExpressionEngine/pull/5133) [#5193](https://github.com/ExpressionEngine/ExpressionEngine/pull/5193) [#4985](https://github.com/ExpressionEngine/ExpressionEngine/pull/4985)
+
 ## Version 7.5.21
 (Release: March 2nd, 2026)
 <div class="max-w-7xl mx-autotext-center">