Update .changeset/rare-words-sin.md

Co-authored-by: Siddharth Kshetrapal <[email protected]>

Author: hussam-i-am

.changeset/rare-words-sin.md

@@ -2,4 +2,5 @@
 '@primer/react': minor
 ---
 
-chore(className): add missing className props and update behavesAsComponent test check
+ActionList.Group + ActionList.TrailingAction: add missing className prop
+LabelGroup: add missing className prop