python3-pyyaml: Add version 5.3

This can be a dependency for packages like homeassistant 0.107.6. Keep
it as meta-python dunfell is already on a newer version.

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

recipes-devtools/python/python3-pyyaml_5.3.bb

+SUMMARY = "Python support for YAML"
+DEPENDS += "libyaml ${PYTHON_PN}-cython-native"
+
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=a76b4c69bfcf82313bbdc0393b04438a"
+
+PYPI_PACKAGE = "PyYAML"
+
+inherit pypi setuptools3
+
+SRC_URI[sha256sum] = "e9f45bd5b92c7974e59bcd2dcc8631a6b6cc380a904725fce7bc08872e691615"
+
+RDEPENDS_${PN} += "\
+    ${PYTHON_PN}-datetime \
+    ${PYTHON_PN}-netclient \
+"
+
+BBCLASSEXTEND = "native nativesdk"