Update wasi-vfs to stop encoding host env vars in the module #645

Job	Run time
ci-data	4s
Compile native gem for x64-mingw-ucrt	5m 20s
Compile native gem for arm64-darwin	5m 35s
Compile native gem for x86_64-darwin	5m 23s
Compile native gem for aarch64-linux	5m 20s
Compile native gem for x86_64-linux-musl	5m 19s
Compile native gem for x86_64-linux	5m 22s
Compile native gem for aarch64-linux-musl	5m 44s
	38m 7s

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