python3Packages.elastic-apm: fix tests

pkgs/development/python-modules/elastic-apm/default.nix

···
   certifi,
   ecs-logging,
   fetchFromGitHub,
+  fetchpatch,
   httpx,
   jinja2,
   jsonschema,
···
     tag = "v${version}";
     hash = "sha256-S1Ebo9AWN+Mf3OFwxNTiR/AZtje3gNiYkZnVqGb7D4c=";
   };
+
+  patches = [
+    (fetchpatch {
+      name = "fix-tests-with-latest-starlette-and-sanic.patch";
+      url = "https://github.com/elastic/apm-agent-python/commit/80d167f54b6bf1db8b6e7ee52e2ac6803bc64f54.patch";
+      hash = "sha256-VtA7+SyEZiL3aqpikyYJQ4tmdmsUpIdkSx6RtC1AzqY=";
+    })
+  ];
 
   pythonRelaxDeps = [ "wrapt" ];