chore: migrate CI to GitHub Actions

.github/workflows/update-install-script.yml

@@ -2,19 +2,20 @@ name: Synchronise Upstream Script
 
 on:
   schedule:
-    # Runs at 02:00 GMT every Thursday (4 represents Thursday)
+    # Runs at 02:00 UTC every Thursday (4 represents Thursday)
     - cron: '0 2 * * 4'
   workflow_dispatch: # Allows manual triggering to test the workflow behaviour
 
+# Grant the built-in GITHUB_TOKEN permission to push the synced script
+permissions:
+  contents: write
+
 jobs:
   update-script:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-        with:
-          # Ensure we have the necessary credentials to push changes
-          token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Download the latest script
         run: |
@@ -27,7 +28,7 @@ jobs:
       - name: Check for changes and commit
         run: |
           # Configure Git identity for the automated commit
-          git config user.name "gitea-actions-bot"
+          git config user.name "onixbyte"
           git config user.email "actions@onixbyte.dev"
 
           # Add the script to the staging area