added CHANGELOG line

Author: schmunk42

framework/CHANGELOG.md

@@ -8,7 +8,7 @@ Yii Framework 2 Change Log
 - Bug #19940: File Log writer without newline (terabytesoftw)
 - Bug #19951: Removed unneeded MIME file tests (schmunk42)
 - Bug #19950: Fix `Query::groupBy(null)` causes error for PHP 8.1: `trim(): Passing null to parameter #1 ($string) of type string is deprecated` (uaoleg)
-
+- Enh #19780: added pcntl to requirements check (schmunk42)
 
 2.0.49 August 29, 2023
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