Fix jp role on macOS

roles/jp/tasks/Darwin.yaml

@@ -4,9 +4,12 @@
     url: https://api.github.com/repos/jmespath/jp/releases/latest
   register: latest
 
-# TODO: Support arm64
 - set_fact:
-    asset_query: '[?contains(name, `jp-darwin-amd64`)] | [0]'
+    arch: '{{ [ansible_architecture] |
+      map("extract", { "arm64": "arm64", "x86_64": "amd64" }) | first }}'
+
+- set_fact:
+    asset_query: '[?contains(name, `jp-darwin-{{arch}}`)] | [0]'
     assets: '{{latest.json.assets}}'
     latest_version: '{{latest.json.tag_name}}'
     jp_exe: '{{ansible_env.HOME}}/.local/bin/jp'
@@ -14,7 +17,7 @@
 - name: check if already installed
   stat:
     path: '{{jp_exe}}'
-  register: jp_exe
+  register: jp_stat
 
 - name: get installed version
   when: jp_stat.stat.exists == True