release: 4.16.0 (#677)

* chore(internal): support uploading Maven repo artifacts to stainless package server

* chore(internal): clean up maven repo artifact script and add html documentation to repo root

* chore: test on Jackson 2.14.0 to avoid encountering FasterXML/jackson-databind#3240 in tests
fix: date time deserialization leniency

* chore(internal): improve maven repo docs

* fix(client): disallow coercion from float to int

* chore(internal): update `actions/checkout` version

* fix(client): fully respect max retries
fix(client): send retry count header for max retries 0
chore(internal): depend on packages directly in example

* chore(ci): upgrade `actions/setup-java`

* feat(api): api update

* chore(internal): update maven repo doc to include authentication

* feat(client): send `X-Stainless-Kotlin-Version` header

* fix: make ResponseAccumulator forwards compatible with new event types

* release: 4.16.0

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Co-authored-by: stainless-app[bot] <142633134+stainless-app[bot]@users.noreply.github.com>
Co-authored-by: Tomer Aberbach <tomer@stainless.com>