🩹 fix deprecation warning: Node.js 12 actions are deprecated. (#1885)

* 🩹 fix deprecation warning:

   Node.js 12 actions are deprecated.
   For more information see:
   https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/.
   Please update the following actions to use Node.js 16: actions/checkout@master

   Using version v3, latest or master: actions/checkout#689

Signed-off-by: Thomas Merz <git@rhoenwurz.de>

* Update .github/workflows/update-sh.yml

Co-authored-by: J0WI <J0WI@users.noreply.github.com>
Signed-off-by: thomasmerz <thomasmerz@users.noreply.github.com>

Signed-off-by: Thomas Merz <git@rhoenwurz.de>
Signed-off-by: thomasmerz <thomasmerz@users.noreply.github.com>
Co-authored-by: J0WI <J0WI@users.noreply.github.com>

.github/workflows/update-sh.yml

@@ -13,7 +13,7 @@ jobs:
     name: Run update.sh script
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Run update.sh script
       run: ./update.sh
     - name: Commit files