wasm-wc: Update to wasmtime v26.0.1

[ac000]

This fixes an issue we had with wasm-wasi-component failing to load components with

  2024/11/06 21:08:50 [alert] 107196#107196 failed to create initial state

  Caused by:
      0: failed to compile component
      1: WebAssembly translation error
      2: Invalid input WebAssembly code at offset 15936: zero byte expected

Which was a symptom of
<https://github.com/bytecodealliance/wasmtime/issues/9130>

Closes: https://github.com/nginx/unit/issues/1477

[javorszky]

Tiny change, makes sense, thank you for the link to the issue, test passes, let's merge it!

[ac000]

Rebased with master

$ git range-diff 3df87657...e6519b9d
-:  -------- > 1:  158322ec auto: Remove unused pthread spinlock checks
1:  3df87657 = 2:  e6519b9d wasm-wc: Update to wasmtime v26.0.1