Updated Changelog (markdown)

Changelog.md

@@ -1,6 +1,15 @@
 # Ryujinx Changelog
 All updates to the Ryujinx official master build will be documented in this file
 
+## 1.1.620 - 2023-02-15
+### Fixed:
+- Vulkan: Clean up MemoryAllocator.
+  - Avoid querying GPU memory properties at allocation time. No known changes in games. 
+
+<details open>
+<summary>Older releases</summary>
+<br>
+
 ## 1.1.619 - 2023-02-13
 ### Fixed:
 - Vulkan: Enforce Vulkan 1.2+ at instance API level and 1.1+ at device level.
@@ -621,10 +630,6 @@ You can help with missing translations on https://crwd.in/ryujinx
 - Fix typo in left joycon SL binding.
   - Left SL button was incorrectly labeled as Right SL button.
 
-<details open>
-<summary>Older releases</summary>
-<br>
-
 ## 1.1.500 - 2022-12-29
 ### Fixed:
 - Filter hidden game files from the Game List.