chore: Upgrade actions to latest versions (#21)

Author: vvillait88

.github/workflows/publish.yaml

@@ -13,7 +13,7 @@ jobs:
       packages: write
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Ruby 3.0
       uses: ruby/setup-ruby@v1
       with:

.github/workflows/test.yaml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Ruby 3.0
         uses: ruby/setup-ruby@v1
         with: