Update ci.yml

Author: siddhantdange

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
         bin/rspec
     - name: Upload test results to BuildPulse for flaky test detection
       if: '!cancelled()' # Run this step even when the tests fail. Skip if the workflow is cancelled.
-      uses: buildpulse/buildpulse-action@master
+      uses: buildpulse/buildpulse-action@main
       with:
         account: 68192324 # Replace this value with your BuildPulse account ID
         repository: 238705816 # Replace this value with your BuildPulse repository ID