expat: Update library from 2.2.5 to 2.2.9

components/expat/CMakeLists.txt

@@ -1,5 +1,4 @@
-idf_component_register(SRCS "expat/expat/lib/loadlibrary.c"
-                            "expat/expat/lib/xmlparse.c"
+idf_component_register(SRCS "expat/expat/lib/xmlparse.c"
                             "expat/expat/lib/xmlrole.c"
                             "expat/expat/lib/xmltok.c"
                             "expat/expat/lib/xmltok_impl.c"

components/expat/expat

@@ -1 +1 @@
-Subproject commit 968b8cc46dbee47b83318d5f31a8e7907199614b
+Subproject commit a7bc26b69768f7fb24f0c7976fae24b157b85b13