MFV: expat 2.7.3.

MFC after:	3 days

lib/libexpat/expat_config.h

@@ -89,7 +89,7 @@
 #define PACKAGE_NAME "expat"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "expat 2.7.2"
+#define PACKAGE_STRING "expat 2.7.3"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "expat"
@@ -98,7 +98,7 @@
 #define PACKAGE_URL ""
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "2.7.2"
+#define PACKAGE_VERSION "2.7.3"
 
 /* Define to 1 if all of the C89 standard headers exist (not just the ones
    required in a freestanding environment). This macro is provided for
@@ -106,7 +106,7 @@
 #define STDC_HEADERS 1
 
 /* Version number of package */
-#define VERSION "2.7.2"
+#define VERSION "2.7.3"
 
 /* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
    significant byte first (like Motorola and SPARC, unlike Intel). */

lib/libexpat/libbsdxml.3

@@ -23,7 +23,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"/
-.Dd April 7, 2025
+.Dd September 28, 2025
 .Dt LIBBSDXML 3
 .Os
 .Sh NAME
@@ -34,7 +34,7 @@
 .Sh DESCRIPTION
 The
 .Nm
-library is a verbatim copy of the eXpat XML library version 2.7.2.
+library is a verbatim copy of the eXpat XML library version 2.7.3.
 .Pp
 The
 .Nm