fix(deps): update rust crate rust-ini to 0.21.0 (#1302)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [rust-ini](https://togithub.com/zonyitoo/rust-ini) | dependencies |
minor | `0.19.0` -> `0.21.0` |

---

### Release Notes

<details>
<summary>zonyitoo/rust-ini (rust-ini)</summary>

###
[`v0.21.0`](https://togithub.com/zonyitoo/rust-ini/releases/tag/v0.21.0)

[Compare
Source](https://togithub.com/zonyitoo/rust-ini/compare/v0.20.0...v0.21.0)

#### What's Changed

- Add iter_mut() and into_iter() to Properties by
[@&#8203;arucil](https://togithub.com/arucil) in
[https://github.com/zonyitoo/rust-ini/pull/118](https://togithub.com/zonyitoo/rust-ini/pull/118)
- Use a Cow<'static, str> for ParseError by
[@&#8203;GnomedDev](https://togithub.com/GnomedDev) in
[https://github.com/zonyitoo/rust-ini/pull/121](https://togithub.com/zonyitoo/rust-ini/pull/121)
- Updating README usage version to 0.20 by
[@&#8203;BigBallard](https://togithub.com/BigBallard) in
[https://github.com/zonyitoo/rust-ini/pull/125](https://togithub.com/zonyitoo/rust-ini/pull/125)
- Fix clippy warnings by
[@&#8203;GnomedDev](https://togithub.com/GnomedDev) in
[https://github.com/zonyitoo/rust-ini/pull/120](https://togithub.com/zonyitoo/rust-ini/pull/120)
- Add inline(never) to Parser::error by
[@&#8203;GnomedDev](https://togithub.com/GnomedDev) in
[https://github.com/zonyitoo/rust-ini/pull/122](https://togithub.com/zonyitoo/rust-ini/pull/122)
- Avoid reallocating for trimming by
[@&#8203;GnomedDev](https://togithub.com/GnomedDev) in
[https://github.com/zonyitoo/rust-ini/pull/124](https://togithub.com/zonyitoo/rust-ini/pull/124)

#### New Contributors

- [@&#8203;arucil](https://togithub.com/arucil) made their first
contribution in
[https://github.com/zonyitoo/rust-ini/pull/118](https://togithub.com/zonyitoo/rust-ini/pull/118)
- [@&#8203;GnomedDev](https://togithub.com/GnomedDev) made their first
contribution in
[https://github.com/zonyitoo/rust-ini/pull/121](https://togithub.com/zonyitoo/rust-ini/pull/121)
- [@&#8203;BigBallard](https://togithub.com/BigBallard) made their first
contribution in
[https://github.com/zonyitoo/rust-ini/pull/125](https://togithub.com/zonyitoo/rust-ini/pull/125)

**Full Changelog**:
zonyitoo/rust-ini@v0.20.0...v0.21.0

###
[`v0.20.0`](https://togithub.com/zonyitoo/rust-ini/releases/tag/v0.20.0)

[Compare
Source](https://togithub.com/zonyitoo/rust-ini/compare/v0.19.0...v0.20.0)

#### What's Changed

- Fix clippy warnings by
[@&#8203;crapStone](https://togithub.com/crapStone) in
[https://github.com/zonyitoo/rust-ini/pull/110](https://togithub.com/zonyitoo/rust-ini/pull/110)
- Add support for custom key-value separator in nameless sections. by
[@&#8203;LostSnail42](https://togithub.com/LostSnail42) in
[https://github.com/zonyitoo/rust-ini/pull/112](https://togithub.com/zonyitoo/rust-ini/pull/112)
- Update ordered-multimap dependency by
[@&#8203;loewenheim](https://togithub.com/loewenheim) in
[https://github.com/zonyitoo/rust-ini/pull/115](https://togithub.com/zonyitoo/rust-ini/pull/115)

#### New Contributors

- [@&#8203;crapStone](https://togithub.com/crapStone) made their first
contribution in
[https://github.com/zonyitoo/rust-ini/pull/110](https://togithub.com/zonyitoo/rust-ini/pull/110)
- [@&#8203;LostSnail42](https://togithub.com/LostSnail42) made their
first contribution in
[https://github.com/zonyitoo/rust-ini/pull/112](https://togithub.com/zonyitoo/rust-ini/pull/112)
- [@&#8203;loewenheim](https://togithub.com/loewenheim) made their first
contribution in
[https://github.com/zonyitoo/rust-ini/pull/115](https://togithub.com/zonyitoo/rust-ini/pull/115)

**Full Changelog**:
zonyitoo/rust-ini@v0.19.0...v0.20.0

</details>

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packages/swc/Cargo.toml

@@ -12,7 +12,7 @@ crate-type = ["cdylib", "rlib"]
 lto = true
 
 [dependencies]
-rust-ini = "0.19.0"
+rust-ini = "0.21.0"
 serde = "1.0.189"
 serde_json = "1.0.107"
 string_cache = "0.8.7"

packages/swc/src/core/resolve_env_from_file_name.rs

@@ -11,8 +11,7 @@ pub fn resolve_env_from_file_name(file_name: &str) -> Vec<(String, String)> {
     ini::Ini::load_from_str(file_content.as_str())
         .unwrap()
         .into_iter()
-        .map(|(_, prop)| prop.iter())
-        .flatten()
+        .flat_map(|(_, prop)| prop.into_iter())
         .for_each(|(k, v)| {
             env.push((k.to_owned(), v.to_owned()));
         });