test(cat-gateway): adds nightly schemathesis

[kukkok3]

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[github-actions]

❌ Test Report | ${\color{lightgreen}Pass: 381/384}$ | ${\color{red}Fail: 3/384}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 384/384}$ | ${\color{red}Fail: 0/384}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 384/384}$ | ${\color{red}Fail: 0/384}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 384/384}$ | ${\color{red}Fail: 0/384}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 384/384}$ | ${\color{red}Fail: 0/384}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 384/384}$ | ${\color{red}Fail: 0/384}$ |