Bump bundler version

Author: JonathanWenger

.github/workflows/deploy.yml

@@ -27,7 +27,7 @@ jobs:
             ${{ runner.os }}-gems-
       - name: Install deps
         run: |
-          gem install bundler -v 2.4.22
+          gem install bundler -v 2.6.2
           bundle config path vendor/bundle
           bundle install --jobs 4 --retry 3
       - name: Setup deploy options