Disable Bundler for bump install - we don't need it, and no need to install project deps

Signed-off-by: Clinton Wolfe <156460+clintoncwolfe@users.noreply.github.com>

Author: clintoncwolfe

.github/workflows/cd-main-version-bumper.yml

@@ -94,7 +94,7 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: 'ruby'
-          bundler-cache: true
+          # bundler-cache: true
 
       - name: Install bump gem
         run: gem install bump