lint.yml in statsd-instrument-3.1.2

- old
+ new

@@ -11,10 +11,10 @@
     - uses: actions/checkout@v1
 
     - name: Setup Ruby
       uses: actions/setup-ruby@v1
       with:
-        ruby-version: 2.6
+        ruby-version: 2.7
 
     - name: Install dependencies
       run: gem install bundler && bundle install --jobs 4 --retry 3
 
     - name: Run Rubocop