Update GitHub workflows

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
   tests:
     strategy:
       matrix:
-        ruby: [ '2.6', '2.7', '3.0' ]
+        ruby: [ '3.1', '3.2', '3.3', '3.4' ]
 
     name: Tests - Ruby ${{ matrix.ruby }}
     # Set the type of machine to run on
@@ -19,9 +19,9 @@ jobs:
     steps:
       # Checks out a copy of your repository on the ubuntu-latest machine
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
-      - uses: actions/cache@v2
+      - uses: actions/cache@v3
         with:
           path: vendor/bundle
           key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
@@ -42,4 +42,3 @@ jobs:
       - name: Run tests
         run: |
           bundle exec rake test
-

.github/workflows/linter.yml

@@ -36,7 +36,7 @@ jobs:
       # Checkout the code base #
       ##########################
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           # Full git history is needed to get a proper list of changed files within `super-linter`
           fetch-depth: 0