Update dependency cloudevents to v1.11.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
cloudevents	==1.10.1 -> ==1.11.0

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Release Notes

cloudevents/sdk-python (cloudevents)

### [`v1.11.0`](https://togithub.com/cloudevents/sdk-python/blob/HEAD/CHANGELOG.md#1110) [Compare Source](https://togithub.com/cloudevents/sdk-python/compare/1.10.1...1.11.0) ##### Fixed - Pydantic v2 `examples` keyword usage and improved typings handling (\[[#​235](https://togithub.com/cloudevents/sdk-python/issues/235)]) - Kafka `to_binary` check for invalid `content-type` attribute (\[[#​232](https://togithub.com/cloudevents/sdk-python/issues/232)]) ##### Changed - Dropped Python3.7 from CI while its EOL. (\[[#​236](https://togithub.com/cloudevents/sdk-python/issues/236)])

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