Patch in pyo3 req to deal with cross compilation

See PyO3/pyo3#1847 (comment)

Commit based on
conda-forge/cryptography-feedstock@4f84d62

recipe/meta.yaml

@@ -8,6 +8,8 @@ package:
 source:
   url: https://pypi.io/packages/source/{{ name[0] }}/{{ name }}/{{ name }}-{{ version }}.tar.gz
   sha256: 562b2022faf0882586c915385620d1f11798fc1b32bac55353a530132369a6d0
+  patches:
+    - patches/0001-Use-pyo3-0.15.0-to-fix-cross-compilation.patch  # [build_platform != target_platform]
 
 build:
   number: 1

recipe/patches/0001-Use-pyo3-0.15.0-to-fix-cross-compilation.patch

@@ -0,0 +1,24 @@
+From 150de46911e81a1d5bf69b3219967a8a3f0fcf7f Mon Sep 17 00:00:00 2001
+From: "H. Vetinari" <[email protected]>
+Date: Mon, 21 Mar 2022 16:51:09 +1100
+Subject: [PATCH] Use pyo3 0.15.0 to fix cross-compilation
+
+---
+ tokenizers/Cargo.toml | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/tokenizers/Cargo.toml b/tokenizers/Cargo.toml
+index 7953f36..581b729 100644
+--- a/tokenizers/Cargo.toml
++++ b/tokenizers/Cargo.toml
+@@ -34,6 +34,7 @@ name = "bert_benchmark"
+ harness = false
+
+ [dependencies]
++pyo3 = { version = "0.15.0" }
+ lazy_static = "1.4"
+ rand = "0.7"
+ onig = { version = "6.0", default-features = false }
+-- 
+2.35.1.windows.2
+