add trusted publishing to workflow

Author: azrosen92

.github/workflows/sdk_publish.yaml

@@ -13,6 +13,9 @@ permissions:
       - gusto_embedded/.speakeasy/gen.lock
   workflow_dispatch: {}
 jobs:
+  runs-on: ubuntu-latest
+  generate-secret:
+    uses: rubygems/configure-rubygems-credentials@v1.0.0
   publish:
     uses: speakeasy-api/sdk-generation-action/.github/workflows/sdk-publish.yaml@v15
     with: