ci: use new version of cache, fix spec command

Author: spiderpug

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
           ruby-version: ${{ matrix.ruby }}
 
       - name: Setup Ruby cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: vendor/bundle
           key: ${{ runner.os }}-gems-${{ matrix.ruby }}-${{ hashFiles('**/Gemfile.lock') }}
@@ -45,4 +45,4 @@ jobs:
 
       - name: Test
         run: |
-          bundle exec rake test
+          bundle exec rspec

Rakefile

@@ -6,13 +6,6 @@ require 'rake/testtask'
 $LOAD_PATH.unshift 'lib'
 require 'device_detector'
 
-Rake::TestTask.new do |t|
-  t.pattern = 'spec/**/*_spec.rb'
-  t.libs.push 'spec'
-end
-
-task default: :test
-
 desc 'generate detectable names output for README'
 task :detectable_names do
   require 'date'