Add more valid domains for webhooks URL (#2491) #4213

Job	Run time
Build docs	1m 27s
Examples	2m 54s
Test (macOS)	3m 6s
Check minimal versions	42s
MSRV	2m 3s
Test (nightly)	1m 46s
Test (stable)	1m 41s
Test (beta)	1m 23s
Test (Windows)	3m 1s
Test (native-tls)	5m 26s
Test (no default features)	51s
Test (no cache)	5m 17s
Test (no gateway)	3m 22s
Test (time)	47s
Test (unstable Discord API features)	1m 30s
Test (simd-json)	1m 15s
Test (chrono, chrono)	1m 5s
Test (builder without model, builder, true)	30s
Test (unstable Discord API (no default features), unstable_discord_api, true)	39s
	38m 45s

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