Update Rust crate bindgen to 0.70 (#750)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [bindgen](https://rust-lang.github.io/rust-bindgen/)
([source](https://togithub.com/rust-lang/rust-bindgen)) |
build-dependencies | minor | `0.69` -> `0.70` |

---

### Release Notes

<details>
<summary>rust-lang/rust-bindgen (bindgen)</summary>

###
[`v0.70.1`](https://togithub.com/rust-lang/rust-bindgen/blob/HEAD/CHANGELOG.md#0701-2024-08-20)

[Compare
Source](https://togithub.com/rust-lang/rust-bindgen/compare/v0.70.0...v0.70.1)

#### Added

#### Changed

#### Removed

#### Fixed

- Fix regression where the `const` layout tests were triggering the
`unnecessary_operation` and `identity_op` clippy warnings.

#### Security

###
[`v0.70.0`](https://togithub.com/rust-lang/rust-bindgen/blob/HEAD/CHANGELOG.md#0700-2024-08-16)

[Compare
Source](https://togithub.com/rust-lang/rust-bindgen/compare/v0.69.4...v0.70.0)

#### Added

-   Add target mappings for riscv64imac and riscv32imafc.
- Add a complex macro fallback API
([#&#8203;2779](https://togithub.com/rust-lang/rust-bindgen/issues/2779)).
- Add option to use DST structs for flexible arrays (--flexarray-dst,
[#&#8203;2772](https://togithub.com/rust-lang/rust-bindgen/issues/2772)).
- Add option to dynamically load variables
([#&#8203;2812](https://togithub.com/rust-lang/rust-bindgen/issues/2812)).
- Add option in CLI to use rustified non-exhaustive enums
(--rustified-non-exhaustive-enum,
[#&#8203;2847](https://togithub.com/rust-lang/rust-bindgen/issues/2847)).

#### Changed

- Remove which and lazy-static dependencies
([#&#8203;2809](https://togithub.com/rust-lang/rust-bindgen/issues/2809),
[#&#8203;2817](https://togithub.com/rust-lang/rust-bindgen/issues/2817)).
- Generate compile-time layout tests
([#&#8203;2787](https://togithub.com/rust-lang/rust-bindgen/issues/2787)).
- Print `bindgen-cli` errors to stderr instead of stdout
([#&#8203;2840](https://togithub.com/rust-lang/rust-bindgen/issues/2840))

#### Removed

#### Fixed

- Fix `--formatter=prettyplease` not working in `bindgen-cli` by adding
`prettyplease` feature and
enabling it by default for `bindgen-cli`
([#&#8203;2789](https://togithub.com/rust-lang/rust-bindgen/issues/2789))
.
- Fix `--allowlist-item` so anonymous enums are no longer ignored
([#&#8203;2827](https://togithub.com/rust-lang/rust-bindgen/issues/2827)).
- Use clang_getFileLocation instead of clang_getSpellingLocation to fix
clang-trunk
([#&#8203;2824](https://togithub.com/rust-lang/rust-bindgen/issues/2824)).
- Fix generated constants: `f64::INFINITY`, `f64::NEG_ INFINITY`,
`f64::NAN`
([#&#8203;2854](https://togithub.com/rust-lang/rust-bindgen/issues/2854)).

#### Security

- Update `tempfile` and `rustix` due to
[GHSA-c827-hfw6-qwvm](https://togithub.com/advisories/GHSA-c827-hfw6-qwvm).

</details>

---

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emulator/mgba-sys/Cargo.toml

@@ -10,6 +10,6 @@ exclude = ["mgba/doc/*", "mgba/res/*", "mgba/cinema/*", "mgba/tools/*"]
 
 
 [build-dependencies]
-bindgen = "0.69"
+bindgen = "0.70"
 pkg-config = "0.3"
 cmake = "0.1"