chore(deps): update dependency rules_shell to v0.6.0 (#159)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [rules_shell](https://redirect.github.com/bazelbuild/rules_shell) |
bazel_dep | minor | `0.5.1` -> `0.6.0` |

---

### Release Notes

<details>
<summary>bazelbuild/rules_shell (rules_shell)</summary>

###
[`v0.6.0`](https://redirect.github.com/bazelbuild/rules_shell/releases/tag/v0.6.0)

#### Using Bzlmod with Bazel 6 or greater

1. (Bazel 6 only) Enable with `common --enable_bzlmod` in `.bazelrc`.
2. Add to your `MODULE.bazel` file:

```starlark
bazel_dep(name = "rules_shell", version = "0.6.0")
```

#### Using WORKSPACE

Paste this snippet into your `WORKSPACE.bazel` file:

```starlark
load("@&#8203;bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
http_archive(
    name = "rules_shell",
    sha256 = "fce2a7a974aa70e9367068122e19c39a6a27a5aca30698bcf9030beb529612b6",
    strip_prefix = "rules_shell-0.6.0",
    url = "https://github.com/bazelbuild/rules_shell/releases/download/v0.6.0/rules_shell-v0.6.0.tar.gz",
)

load("@&#8203;rules_shell//shell:repositories.bzl", "rules_shell_dependencies", "rules_shell_toolchains")
rules_shell_dependencies()
rules_shell_toolchains()
```

#### What's Changed

- Update runfiles library label in setup instructions by
[@&#8203;fmeum](https://redirect.github.com/fmeum) in
[https://github.com/bazelbuild/rules_shell/pull/35](https://redirect.github.com/bazelbuild/rules_shell/pull/35)5
- Use launcher wrapper to initialize runfiles by
[@&#8203;mering](https://redirect.github.com/mering) in
[https://github.com/bazelbuild/rules_shell/pull/38](https://redirect.github.com/bazelbuild/rules_shell/pull/38)8

#### New Contributors

- [@&#8203;mering](https://redirect.github.com/mering) made their first
contribution in
[https://github.com/bazelbuild/rules_shell/pull/38](https://redirect.github.com/bazelbuild/rules_shell/pull/38)8

**Full Changelog**:
https://github.com/bazelbuild/rules\_shell/compare/v0.5.1...v0.6.0

</details>

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examples/custom_swift_proto_compiler/MODULE.bazel

@@ -14,7 +14,7 @@ local_path_override(
 bazel_dep(name = "rules_swift_package_manager", version = "1.4.0")
 bazel_dep(name = "cgrindel_bazel_starlib", version = "0.27.0")
 bazel_dep(name = "bazel_skylib", version = "1.8.1")
-bazel_dep(name = "rules_shell", version = "0.5.1")
+bazel_dep(name = "rules_shell", version = "0.6.0")
 
 # The apple_support bazel_dep must come before the rules_cc.
 # https://github.com/bazelbuild/apple_support#incompatible-toolchain-resolution