Update python-package.yml to have 15m as timeout #147

Job	Run time
📦 Build the source distribution	18s
Tests on 3.8	8m 29s
Tests on 3.9	8m 33s
📦 Publish to PyPI	0s
Tests on 3.10	9m 57s
Tests for Kafka 0.9.0.1 (Python 3.12)	4m 27s
Tests on 3.11	7m 7s
Tests for Kafka 0.10.2.2 (Python 3.12)	6m 27s
Tests on 3.12	10m 17s
Tests for Kafka 0.11.0.2 (Python 3.12)	6m 34s
Tests on pypy3.9	12m 28s
Tests for Kafka 0.11.0.3 (Python 3.12)	9m 49s
Tests for Kafka 1.1.1 (Python 3.12)	11m 9s
Tests for Kafka 2.4.0 (Python 3.12)	7m 58s
Tests for Kafka 2.5.0 (Python 3.12)	8m 42s
Tests for Kafka 2.6.0 (Python 3.12)	9m 21s
Tests for Kafka 0.8.2.2 (Python 3.12)	15m 16s
Tests for Kafka 0.8.2.2 (Python 3.10)	5m 13s
✅ Ensure the required checks passing	9s
	2h 22m 14s

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