Exit with 0 even if no new files to commit

Author: bitfl0wer

.github/workflows/deploy-openapi-spec.yml

@@ -34,4 +34,4 @@ jobs:
               mv ./api/src/core/tsp-output/@typespec/openapi3/openapi.v1.0.yaml ./api/build/core-openapi3.yaml
               git add ./api/build/*
               git commit -m "[bot]update openapi3 schema"
-              git push
+              git push || exit 0