Merge pull request #17 from asdf-community/renovate/actions-checkout-4.x

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

Author: smorimoto

.github/workflows/workflow.yml

@@ -33,7 +33,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install asdf
         run: git clone https://github.com/asdf-vm/asdf.git $HOME/asdf
@@ -51,7 +51,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Run ShellCheck
         run: shellcheck bin/*
@@ -61,7 +61,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install shfmt
         run: brew install shfmt