Upgrade to wasmtime 8.0.1

[rylev]

This brings spin much further forward with regards to its usage of upstream wasm libraries which enables a lot more experimentation with new standards around the component model. For users this should effectively be a noop.

[Mossaka]

This PR might resolve issue #1437

[rylev]

The failing test is due to the fact that we're defining our spin world in two different ways (due to the fact that our SDKs use old versions of wit-bindgen - fixed in #1424 - while our host implementation uses newer style wit documents). The config interface is called "spin-config" in the SDK while the host expects just "config". spin-componentize is smoothing this out for older modules which is why this wasn't an issue before, but we updated the failing test to use wit-bindgen 0.6 which thus skips over the spin-componentize world massaging.

For now, we can merge fermyon/spin-componentize#7 and revert the broken test to use wit-bindgen 0.4, but we'll eventually want to fix the issue of our world definitions not aligning. When #1424 is merged we can move to using the same wit definitions for both guest and host.

[rylev]

Superseded by #1439.