Add hybrid agent changelog entry #7458

Job	Run time
run_rubocop	39s
unit_tests (4.0.0)	42s
multiverse_services_mysql_pg (4.0.0)	48s
multiverse_services_2 (4.0.0)	42s
infinite_tracing (3.4.8)	51s
unit_tests (2.6.10)	44s
multiverse_services_1 (2.6.10)	46s
multiverse_services_1 (4.0.0)	47s
multiverse_services_kafka (4.0.0)	52s
multiverse_services_mysql_pg (2.6.10)	48s
multiverse_services_elasticsearch (2.6.10)	45s
multiverse_services_2 (2.6.10)	44s
multiverse_services_elasticsearch (4.0.0)	38s
multiverse_services_kafka (2.6.10)	37s
infinite_tracing (2.7.8)	38s
multiverse (rails, 4.0.0)	51s
multiverse (httpclients, 4.0.0)	51s
multiverse (httpclients_2, 4.0.0)	51s
multiverse (httpclients, 2.6.10)	39s
multiverse (background, 4.0.0)	50s
multiverse (hybrid_agent, 4.0.0)	51s
multiverse (ai, 4.0.0)	52s
multiverse (httpclients_2, 2.6.10)	39s
multiverse (background_2, 4.0.0)	51s
multiverse (rails, 2.6.10)	51s
multiverse (rest, 2.6.10)	39s
multiverse (hybrid_agent, 2.6.10)	50s
multiverse (rest, 4.0.0)	50s
multiverse (ai, 2.6.10)	39s
multiverse (background, 2.6.10)	38s
multiverse (agent, 2.6.10)	39s
multiverse (frameworks, 4.0.0)	52s
multiverse (frameworks, 2.6.10)	38s
multiverse (background_2, 2.6.10)	38s
multiverse (agent, 4.0.0)	49s
simplecov	1s
	26m 20s

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