Add changelog and update version for v1.15.2

Change-Id: Ie775298c94b4ca47837a631c3b583a7802a4b9ab

CHANGELOG

diff --git a/CHANGELOG b/CHANGELOG
index 554ff41..28cdcde 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+2025-05-28 v1.15.2 "Wigeon Duck"
+  This release fixes CVE-2025-5283 (bug webm:413411335), and is ABI compatible
+  with the previous release.
+
 2025-01-09 v1.15.1 "Wigeon Duck"
   This release bumps up the SO major version and fixes the language about ABI
   compatibility in the previous release changelog.

libs.mk

diff --git a/libs.mk b/libs.mk
index f68ad6c..4a28b11 100644
--- a/libs.mk
+++ b/libs.mk
@@ -315,7 +315,7 @@
 # (c1, a1, r1) and set MAJOR to [c1-a1], MINOR to a1 and PATCH to r1
 SO_VERSION_MAJOR := 11
 SO_VERSION_MINOR := 0
-SO_VERSION_PATCH := 0
+SO_VERSION_PATCH := 1
 ifeq ($(filter darwin%,$(TGT_OS)),$(TGT_OS))
 LIBVPX_SO               := libvpx.$(SO_VERSION_MAJOR).dylib
 SHARED_LIB_SUF          := .dylib