fix gem push task so it actually publishes the gems (#21)

Author: jamis

.github/workflows/release.yml

@@ -160,6 +160,6 @@ jobs:
 
       - name: Publish the gems
         uses: rubygems/release-gem@v1
-        if: inputs.dry_run == 'false'
+        if: inputs.dry_run == false
         with:
           await-release: false