Test

fix: allow specifying the user-agent header for outgoing requests (#1… #2201

Job	Run time
node-versions / Get Node.js Versions	1s
audit / Audit NPM Dependencies	20s
Test Suite (current)	57s
Test Suite (lts/hydrogen)	55s
Test Suite (lts/iron)	53s
Test Suite (lts/jod)	52s
	3m 58s

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