python3-cryptography: backport fix for leaky test

The leaking test case has been fixed upstream, so backport the patch.

(From OE-Core rev: 4705b8a724fe288a20f1a080e2796ea90f46c9fb)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python3-cryptography_36.0.2.bb

@@ -16,7 +16,7 @@ SRC_URI += " \
     file://check-memfree.py \
     file://0001-Cargo.toml-specify-pem-version.patch \
     file://0002-Cargo.toml-edition-2018-2021.patch \
-    file://skip-leaky-test.patch \
+    file://fix-leak-metric.patch \
 "
 
 inherit pypi python_setuptools3_rust