2.8.3 Release Notes (#14632)
2.8.3 Release Notes (#14632)

* WIP: 2.8.3 release notes

* Refactor titles

Co-authored-by: Anonymitaet <aec7d063be84bc289e6d466598c8e26d10c73dc9@users.noreply.github.com>

* Fix tense; upper case first letters

* Correct version; update date

Co-authored-by: Anonymitaet <aec7d063be84bc289e6d466598c8e26d10c73dc9@users.noreply.github.com>
massakam/pulsar,massakam/pulsar,yahoo/pulsar,merlimat/pulsar,massakam/pulsar,merlimat/pulsar,yahoo/pulsar,massakam/pulsar,yahoo/pulsar,massakam/pulsar,yahoo/pulsar,massakam/pulsar,merlimat/pulsar,yahoo/pulsar,merlimat/pulsar,merlimat/pulsar,merlimat/pulsar,yahoo/pulsar