cdevents-sdk-v0.2.1

Fixed

• adapt code to fluent-uri upgrade

Other

• (deps) remove explicit minor in dependencies version with major > 0
• (deps) update fluent-uri requirement from 0.3 to 0.4
• (deps) update cloudevents-sdk requirement from 0.8 to 0.9 (#61)
• (deps) update proptest-derive requirement from 0.6 to 0.7 (#58)
• (deps) update rstest requirement from 0.25 to 0.26
• (deps) update proptest-derive requirement from 0.5 to 0.6