* Change bundler

Author: ag-ramachandran

.github/workflows/build.yml

@@ -42,7 +42,7 @@ jobs:
           echo "$LOGSTASH_PATH/bin" >> $GITHUB_PATH
           echo "$LOGSTASH_PATH/vendor/jruby/bin" >> $GITHUB_PATH
       - name: Install bundler
-        run: jruby -S gem install bundler -v 2.6.5
+        run: jruby -S gem install bundler -v 2.4.19
       - name: Checkout code
         uses: actions/checkout@v2
         with: