python3Packages.opentelemetry-api: 1.18.0 -> 1.20.0

pkgs/development/python-modules/opentelemetry-api/default.nix

···
 let
   self = buildPythonPackage rec {
     pname = "opentelemetry-api";
-    version = "1.18.0";
+    version = "1.20.0";
     disabled = pythonOlder "3.7";
 
     # to avoid breakage, every package in opentelemetry-python must inherit this version, src, and meta
     src = fetchFromGitHub {
       owner = "open-telemetry";
       repo = "opentelemetry-python";
-      rev = "refs/tags/v${self.version}";
-      hash = "sha256-8xf4TqEkBeueejQBckFGwBNN4Gyo+/7/my6Z1Mnei5Q=";
+      rev = "refs/tags/v${version}";
+      hash = "sha256-tOg3G6BjHInY5TFYyS7/JA4mQajeP0b1QjrZBGqiqnM=";
     };
 
     sourceRoot = "${src.name}/opentelemetry-api";

pkgs/development/python-modules/opentelemetry-exporter-otlp-proto-common/default.nix

···
 , buildPythonPackage
 , pythonOlder
 , hatchling
+, backoff
 , opentelemetry-api
 , opentelemetry-proto
 , opentelemetry-sdk
···
   ];
 
   propagatedBuildInputs = [
+    backoff
     opentelemetry-sdk
     opentelemetry-proto
   ];