ci: update Github actions

.github/workflows/linters.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1

.github/workflows/specs_rails61.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
@@ -35,7 +35,7 @@ jobs:
         run: bundle exec rspec --profile
 
       - name: On failure, archive screenshots as artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: test-failed-screenshots

.github/workflows/specs_rails70.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
@@ -35,7 +35,7 @@ jobs:
         run: bundle exec rspec --profile
 
       - name: On failure, archive screenshots as artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: test-failed-screenshots