package/python-multipart: add CPE identifier

The cpe:2.3:a:fastapiexpert:python-multipart:0.0.20:*:*:*:*:*:*:* is
valid for this package.

See https://nvd.nist.gov/products/cpe/detail/8C38E43A-00AD-4851-9AC9-80408FF89F52

Signed-off-by: Thomas Perale <thomas.perale@mind.be>
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit de8cc1ae504da1c66b70b5cc29e562f20e34841a)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>

package/python-multipart/python-multipart.mk

@@ -10,5 +10,6 @@ PYTHON_MULTIPART_SITE = https://files.pythonhosted.org/packages/f3/87/f44d7c9f27
 PYTHON_MULTIPART_SETUP_TYPE = hatch
 PYTHON_MULTIPART_LICENSE = Apache-2.0
 PYTHON_MULTIPART_LICENSE_FILES = LICENSE.txt
+PYTHON_MULTIPART_CPE_ID_VENDOR = fastapiexpert
 
 $(eval $(python-package))