RESTClient: add support for relative next URLs in LinkPaginators #4220

Job	Run time
get_docs_changes / get_docs_changes	6s
Tests common dlt code (ubuntu-latest, 3.11.x)	22m 9s
Tests common dlt code (macos-latest, 3.11.x)	30m 10s
Tests common dlt code (windows-latest, 3.11.x)	25m 53s
Tests common dlt code (3.8.x, ubuntu-latest)	26m 16s
Tests common dlt code (3.9.x, ubuntu-latest)	27m 17s
Tests common dlt code (3.10.x, ubuntu-latest)	24m 36s
Tests common dlt code (3.12.x, ubuntu-latest)	22m 29s
Common tests	1s
	2h 58m 57s

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