chore(deps): update actions/checkout action to v4 (#25)

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

.github/workflows/say.yml

@@ -12,6 +12,6 @@ jobs:
     if: "!contains(github.event.head_commit.message, 'skip ci')"
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Npm lint script
         run: echo "Say something"