Migrate test action from actions/checkout@v2 to actions/checkout@v4

Author: tiegz

.github/workflows/test.yml

@@ -1,19 +1,18 @@
 name: gha-workflow-authlogic-test
 on: [push, pull_request]
 jobs:
-
   # Linting is a separate job, primary because it only needs to be done once,
   # and secondarily because jobs are performed concurrently.
   gha-job-authlogic-lint:
     name: Lint
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Setup ruby
         uses: ruby/setup-ruby@v1
         with:
-          # Set to `TargetRubyVersion` in `.rubocopy.yml`
+          # Set to `TargetRubyVersion` in `.rubocop.yml`
           ruby-version: 2.6
       - name: Bundle
         run: |
@@ -56,19 +55,20 @@ jobs:
       # have set this up with each database as a separate job, but then we'd be
       # duplicating the matrix configuration three times.
       matrix:
-        gemfile: [ 'rails_5.2', 'rails_6.0', 'rails_6.1', 'rails_7.0', 'rails_7.1' ]
+        gemfile:
+          ["rails_5.2", "rails_6.0", "rails_6.1", "rails_7.0", "rails_7.1"]
 
         # To keep matrix size down, only test highest and lowest rubies. In
         # `.rubocopy.yml`, set `TargetRubyVersion`, to the lowest ruby version
         # tested here.
-        ruby: [ '2.6', '2.7' ]
+        ruby: ["2.6", "2.7"]
 
         exclude:
           # rails 7 requires ruby >= 2.7.0
-          - ruby: '2.6'
-            gemfile: 'rails_7.0'
-          - ruby: '2.6'
-            gemfile: 'rails_7.1'
+          - ruby: "2.6"
+            gemfile: "rails_7.0"
+          - ruby: "2.6"
+            gemfile: "rails_7.1"
     steps:
       - name: Checkout source
         uses: actions/checkout@v2