Bump actions versions

Author: anishathalye

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
     name: Format
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: '3.2'

.github/workflows/docker.yml

@@ -8,7 +8,7 @@ jobs:
     environment: main
     steps:
       - name: Check out code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Log in to Docker Hub
         run: echo $DOCKER_TOKEN | docker login --username=anishathalye --password-stdin
         env: