chore(deps): update dependency build_bazel_rules_swift to v2.1.1 (#181)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [build_bazel_rules_swift](https://togithub.com/bazelbuild/rules_swift)
| http_archive | patch | `2.1.0` -> `2.1.1` |

---

### Release Notes

<details>
<summary>bazelbuild/rules_swift (build_bazel_rules_swift)</summary>

###
[`v2.1.1`](https://togithub.com/bazelbuild/rules_swift/releases/tag/2.1.1)

[Compare
Source](https://togithub.com/bazelbuild/rules_swift/compare/2.1.0...2.1.1)

#### What's Changed

- Add missing swift_toolchain parameter by
[@&#8203;codeman9](https://togithub.com/codeman9) in
[https://github.com/bazelbuild/rules_swift/pull/1289](https://togithub.com/bazelbuild/rules_swift/pull/1289)

This release is compatible with Bazel 6.x LTS, 7.x LTS, and 8.x rolling
releases.

#### MODULE.bazel Snippet

```bzl
bazel_dep(name = "rules_swift", version = "2.1.1", repo_name = "build_bazel_rules_swift")
```

#### Workspace Snippet

```bzl
load("@&#8203;bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "build_bazel_rules_swift",
    sha256 = "9919ed1d8dae509645bfd380537ae6501528d8de971caebed6d5185b9970dc4d",
    url = "https://github.com/bazelbuild/rules_swift/releases/download/2.1.1/rules_swift.2.1.1.tar.gz",
)

load(
    "@&#8203;build_bazel_rules_swift//swift:repositories.bzl",
    "swift_rules_dependencies",
)

swift_rules_dependencies()

load(
    "@&#8203;build_bazel_rules_swift//swift:extras.bzl",
    "swift_rules_extra_dependencies",
)

swift_rules_extra_dependencies()
```

</details>

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swifttidy/deps.bzl

@@ -27,6 +27,6 @@ def swifttidy_rules_dependencies():
     maybe(
         http_archive,
         name = "build_bazel_rules_swift",
-        sha256 = "8e0c72aa2be5ae44da44521c46e0700df184953e8dbc5d5423222b8cb141c64f",
-        url = "https://github.com/bazelbuild/rules_swift/releases/download/2.1.0/rules_swift.2.1.0.tar.gz",
+        sha256 = "9919ed1d8dae509645bfd380537ae6501528d8de971caebed6d5185b9970dc4d",
+        url = "https://github.com/bazelbuild/rules_swift/releases/download/2.1.1/rules_swift.2.1.1.tar.gz",
     )