ci: add update license workflow (#114)

.github/workflows/update_license.yml

@@ -0,0 +1,25 @@
+name: Update license
+
+on:
+  schedule:
+    - cron: "0 3 1 1 *" # 03:00 AM on January 1
+  workflow_dispatch:
+
+jobs:
+  update-license:
+    name: Update license year
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout 🛎️
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Update license year 🪪
+        uses: FantasticFiasco/action-update-license-year@v2.3.0
+        with:
+          token: ${{ secrets.PAT }}
+          commitTitle: 'docs(license): update copyright year to {{ currentYear }}'
+          prTitle: 'docs(license): update copyright year to {{ currentYear }}'
+          labels: documentation

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2022 zeshuaro
+Copyright (c) 2021-2022 zeshuaro
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal