python3-marshmallow: upgrade 3.21.2 -> 3.21.3

Changelog:
============
Fix memory leak that prevented schema instances from getting GC'd

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-python/recipes-devtools/python/python3-marshmallow_3.21.3.bb

@@ -0,0 +1,38 @@
+SUMMARY = "Simplified object serialization in python"
+DESCRIPTION = "Marshmallow is an ORM/ODM/framework-agnostic library for converting complex datatypes, such as objects, to and from native Python datatypes."
+HOMEPAGE = "https://github.com/marshmallow-code/marshmallow"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "\
+                    file://LICENSE;md5=27586b20700d7544c06933afe56f7df4 \
+                    file://docs/license.rst;md5=13da439ad060419fb7cf364523017cfb"
+
+SRC_URI[sha256sum] = "4f57c5e050a54d66361e826f94fba213eb10b67b2fdb02c3e0343ce207ba1662"
+
+inherit python_flit_core pypi ptest
+
+SRC_URI += " \
+        file://run-ptest \
+"
+
+RDEPENDS:${PN}-ptest += " \
+        python3-pytest \
+        python3-pytz \
+        python3-simplejson \
+        python3-unittest-automake-output \
+"
+
+do_install_ptest() {
+        install -d ${D}${PTEST_PATH}/tests
+        rm -rf ${S}/tests/mypy_test_cases
+        cp -rf ${S}/tests/* ${D}${PTEST_PATH}/tests/
+}
+
+RDEPENDS:${PN} += " \
+        python3-compression \
+        python3-datetime \
+        python3-email \
+        python3-json \
+        python3-numbers \
+        python3-pprint \
+        python3-packaging \
+"