update to Wasmtime 17 and WASI 0.2.0

I've taken this opportunity to rename the wit directories to reflect the WASI
snapshots they correspond to.

Note that the Rust and Go SDKs continue to target the 2023-10-18 snapshot for
compatibility.  Likewise, `spin-world`.  `spin-trigger-http`, however, can
handle components targeting either 2023-10-18, 2023-11-10, or the final 0.2.0
release of WASI.

Signed-off-by: Joel Dice <joel.dice@fermyon.com>

Cargo.toml

@@ -130,15 +130,12 @@ hyper = { version = "1.0.0", features = ["full"] }
 reqwest = { version = "0.11", features = ["stream", "blocking"] }
 tracing = { version = "0.1", features = ["log"] }
 
-# TODO: update to final 17.0.0 release once it's available
-wasi-common-preview1 = { git = "https://github.com/bytecodealliance/wasmtime", rev = "0b632023", package = "wasi-common" }
-wasmtime = { git = "https://github.com/bytecodealliance/wasmtime", rev = "0b632023", features = [
-  "component-model",
-] }
-wasmtime-wasi = { git = "https://github.com/bytecodealliance/wasmtime", rev = "0b632023", features = [
+wasi-common-preview1 = { version = "17.0.0", package = "wasi-common" }
+wasmtime = "17.0.0"
+wasmtime-wasi = { version = "17.0.0", features = [
   "tokio",
 ] }
-wasmtime-wasi-http = { git = "https://github.com/bytecodealliance/wasmtime", rev = "0b632023" }
+wasmtime-wasi-http = "17.0.0"
 
 spin-componentize = { git = "https://github.com/fermyon/spin-componentize", rev = "191789170abde10cd55590466c0660dd6c7d472a" }