chore(deps): update actions/checkout action to v3

Author: renovate-bot

.github/workflows/ci.yml

@@ -9,11 +9,11 @@ jobs:
         operating-system: [ubuntu-20.04]
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           submodules: recursive
       - name: Repository lampy
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           submodules: recursive
           repository: koromerzhin/lampy