Update checkout action version.

Author: gibbs

.github/workflows/ci.yaml

@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
 
 concurrency:
-  group: ${{ github.head_ref }}
+  group: ${{ github.head_ref || github.ref_name }}
   cancel-in-progress: true
 
 jobs:
@@ -19,7 +19,7 @@ jobs:
       puppet_unit_test_matrix: ${{ steps.get-outputs.outputs.puppet_unit_test_matrix }}
       github_action_test_matrix: ${{ steps.get-outputs.outputs.github_action_test_matrix }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup ruby
         uses: ruby/setup-ruby@v1
@@ -47,7 +47,7 @@ jobs:
         include: ${{fromJson(needs.setup_matrix.outputs.puppet_unit_test_matrix)}}
     name: Spec Puppet ${{ matrix.puppet }} (Ruby ${{ matrix.ruby }})
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup ruby
         uses: ruby/setup-ruby@v1
@@ -65,7 +65,7 @@ jobs:
       BOLT_GEM: true
       CI: true
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Setup ruby
         uses: ruby/setup-ruby@v1
         with:

.github/workflows/release.yaml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-20.04
     if: github.repository_owner == 'gibbs'
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1