replace dmd with dms #5897

Job	Run time
Test (nightly)	1m 16s
Test (stable)	1m 58s
Test (beta)	1m 43s
Build docs	24s
Test (Windows)	5m 47s
Test (native-tls)	1m 47s
Examples	2m 5s
Test (no default features)	35s
Test (macOS)	1m 9s
Test (no cache)	1m 43s
Test (no gateway)	1m 38s
Check minimal versions	24s
MSRV	0s
Test (unstable Discord API features)	1m 57s
Test (zlib compression)	1m 57s
Test (zstd compression)	1m 57s
Test (zlib and zstd compression)	1m 56s
Test (chrono, chrono)	34s
Test (unstable API + typesize, default unstable typesize, true)	49s
Test (builder without model, builder, true)	20s
Test (unstable Discord API (no default features), unstable, true)	26s
	30m 25s

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