Prepare release for Wasmi `v0.39.0` #4417

Job	Run time
Clippy	1m 4s
Build	1m 50s
Coverage	4m 8s
Audit	2m 45s
Documentation	36s
Formatting	16s
Fuzz (translate)	3m 33s
Check mininum supported Rust version	23s
Fuzz (execute)	3m 26s
Fuzz (differential)	3m 31s
Miri	6m 54s
Miri (spec)	6m 31s
Test (Address Sanitizer)	2m 29s
Test (ubuntu-latest)	1m 54s
uDeps	47s
Test (windows-latest)	4m 32s
Test (macos-latest)	1m 24s
	46m 3s

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