Update RELEASE-NOTES.md for Lettuce 7.4.0 (#3657)

Updated release notes for Lettuce 7.4.0, removing beta references and adding new features, bug fixes, and contributor acknowledgments.

Release 7.3.0 (#3649)

* Release 7.3.0

* Fix typo

Release 7.2.1 (#3582)

Release 7.1.1 (#3556)

Release 7.0.1 (#3558)

Release 6.8.2 (#3557)

* Release 6.8.2

* Rm spellcheck

fix : HealthCheckIntegrationTests nested test classes executed as uni…

…t tests (#3579)

Release 7.2.0 (#3559)

add Benchmark (jmh) benchmark result for 0796a4e

Releasing Lettuce 7.0.0.RELEASE (#3485)