chore(eventsource): update eventsource to v3 #6397

Job	Run time
Installing & Building	1m 38s
Build API Reference	51s
Linting & Testing (agent)	1m 3s
Lint commit messages	17s
Linting & Testing (forest-cloud)	52s
Linting & Testing (datasource-customizer)	55s
Linting & Testing (datasource-dummy)	37s
Linting & Testing (datasource-mongoose)	1m 2s
Linting & Testing (datasource-replica)	36s
Linting & Testing (datasource-mongo)	58s
Linting & Testing (datasource-sequelize)	1m 1s
Linting & Testing (datasource-sql)	50s
Linting & Testing (datasource-toolkit)	49s
Linting & Testing (forestadmin-client)	47s
Linting & Testing (plugin-aws-s3)	32s
Linting & Testing (plugin-export-advanced)	28s
Linting & Testing (plugin-flattener)	33s
Send Coverage	0s
Publish API Reference	0s
Release packages	0s
	13m 49s

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