chore: clean up IO.inspect in delete_topics docstring example (#532)

Replace IO.inspect with IO.puts/inspect in the @doc example for
KafkaEx.API.delete_topics/3,4 so the rendered hexdocs do not model an
anti-pattern.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Release v0.15.0

Merge pull request #498 from fresh-borzoni/sasl-scram-support

SASL Auth implementation(PLAIN + SCRAM)

Update version and changelog

Merge pull request #468 from kafkaex/release_0_13

Release 0.13.0

Merge pull request #436 from kafkaex/update_ex_doc

Update ex doc

Merge pull request #435 from kafkaex/release_0.12.0

Prepare release 0.12.0

Merge pull request #411 from kafkaex/release_0.11.0

Release 0.11.0

Try to up timeout

Merge pull request #345 from kafkaex/release_0.10.0

Release 0.10.0