fix: openapi spec dependency version in the CI test

.github/workflows/main.yml

@@ -143,7 +143,7 @@ jobs:
           sudo apt-get install -y wait-for-it python3 python3-pip
           pip3 install schemathesis
           cd rollup-http/rollup-http-server
-          wget https://raw.githubusercontent.com/cartesi/openapi-interfaces/main/rollup.yaml
+          wget https://raw.githubusercontent.com/cartesi/openapi-interfaces/v0.9.0/rollup.yaml
           MOCK_BUILD=true cargo run -- "echo 1" &
           wait-for-it localhost:5004 --timeout=30
           st run rollup.yaml --checks all --validate-schema true --hypothesis-phases explicit --base-url http://localhost:5004