Update CHANGELOG.md

CHANGELOG.md

@@ -8,6 +8,13 @@
 
 ### Changed
 
+- **Proxmox VE Processor Microcode**
+  - Allow users to select available microcode packages.
+
+## 2023-09-13
+
+### Changed
+
 - **Pi.Alert LXC**
   - NEW Script
 - **Proxmox VE Kernel Clean**