Update wasmtime-wasi-http requirement from 40.0.4 to 43.0.0 in /src/sdk/python/wasm_backend

[dependabot]

Updates the requirements on wasmtime-wasi-http to permit the latest version.

Release notes

Sourced from wasmtime-wasi-http's releases.

v40.0.4

40.0.4

Released 2026-02-24.

Changed

• Wasmtime's implementation of WASI now has the ability to limit resource consumption on behalf of the guest, such as host-allocated memory. This means that some behaviors previously allowed by Wasmtime can now disallowed, such as transferring excessive data from the guest to the host. Additionally calls to wasi:random/random.get-random-bytes, for example, can have limits in place to avoid allocating too much memory on the host. To preserve backwards-compatible behavior these limits are NOT set by default. Embedders must opt-in to configuring these knobs as appropriate for their embeddings. For more information on this see the related security advisory with further details on knobs added and what behaviors can be restricted. GHSA-852m-cvvp-9p4w

Fixed

• Panics when adding too many headers to a wasi:http/types.fields has been resolved GHSA-243v-98vx-264h

• Panic when dropping a [Typed]Func::call_async future. GHSA-xjhv-v822-pf94

Changelog

Sourced from wasmtime-wasi-http's changelog.

40.0.4

Released 2026-02-24.

Changed

• Wasmtime's implementation of WASI now has the ability to limit resource consumption on behalf of the guest, such as host-allocated memory. This means that some behaviors previously allowed by Wasmtime can now disallowed, such as transferring excessive data from the guest to the host. Additionally calls to wasi:random/random.get-random-bytes, for example, can have limits in place to avoid allocating too much memory on the host. To preserve backwards-compatible behavior these limits are NOT set by default. Embedders must opt-in to configuring these knobs as appropriate for their embeddings. For more information on this see the related security advisory with further details on knobs added and what behaviors can be restricted. GHSA-852m-cvvp-9p4w

Fixed

• Panics when adding too many headers to a wasi:http/types.fields has been resolved GHSA-243v-98vx-264h

• Panic when dropping a [Typed]Func::call_async future. GHSA-xjhv-v822-pf94

---

40.0.3

Released 2026-01-26.

Fixed

• Fixed a bug in lowering of f64.copysign on x86-64 whereby when combined with an f64.load, the resulting machine code could read 16 bytes rather than 8 bytes. This could result in a segfault when Wasmtime is configured without signals-based traps.

---

40.0.2

Released 2026-01-14.

Fixed

• A possible stack overflow in the x64 backend with cmp emission has been fixed.

... (truncated)

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[jsturtevant]

dup of #4

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.