chore: update actions/checkout action to v5 (#141)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
         if: ${{ !github.event.pull_request || github.event.pull_request.draft == false }}
         runs-on: ubuntu-24.04
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v5
 
             - name: Install Node.js
               uses: actions/setup-node@v4

.github/workflows/update-readme.yml

@@ -10,7 +10,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Check out repo
-              uses: actions/checkout@v4
+              uses: actions/checkout@v5
               with:
                   token: ${{ secrets.WORKFLOW_PUSH_BOT_TOKEN }}