Add automatic license year update

.github/workflows/update-license-year.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+license='LICENSE.txt'
+prefix='2016-'
+current_year=$(date +%Y)
+sed -i -e "s/$prefix\([0-9\]\+\)/$prefix$current_year/" $license
+
+if [ "$(git diff $license)" ]; then
+  git add $license
+  git commit -m "Update license year to $current_year"
+  git push
+else
+  echo "No changes detected in $license"
+fi

.github/workflows/update-license-year.yml

@@ -0,0 +1,13 @@
+name: Update License Year
+
+on:
+  schedule:
+    - cron: '5 12 1 1 *'
+
+jobs:
+  update_license:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Update license year
+        run: ./update_license.sh