Adding upstream version 2.2.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

testing/resources/arbitrary_bytes_repo/.pre-commit-hooks.yaml

@@ -0,0 +1,5 @@
+-   id: hook
+    name: hook
+    entry: ./hook.sh
+    language: script
+    files: \.py$

testing/resources/arbitrary_bytes_repo/hook.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+# Intentionally write mixed encoding to the output.  This should not crash
+# pre-commit and should write bytes to the output.
+# '☃'.encode() + '²'.encode('latin1')
+echo -e '\xe2\x98\x83\xb2'
+# exit 1 to trigger printing
+exit 1