changelog: Stabilise pldm_entity_association_tree_find_with_locality()

We failed to update the changelog in 7570fae432fa ("pdr: Stabilise
pldm_entity_association_tree_find_with_locality()"), so do that now.

Fixes: 7570fae432fa ("pdr: Stabilise pldm_entity_association_tree_find_with_locality()")
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: If7949aec556a4f8ca98f4021f5fefb70fbb09a97
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7bb170f..eefc0a0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@
 1. pdr: Avoid ID overflow in pldm_entity_association_tree_add_entity()
 2. meson: Apply `b_ndebug=if-release` by default
 3. pdr : Stabilize pldm_entity_association_tree_add_entity()
+4. pdr: Stabilise pldm_entity_association_tree_find_with_locality()
 
 ### Removed