chore(deps): update dependency build_bazel_rules_swift to v1.15.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
build_bazel_rules_swift	http_archive	minor	1.14.0 -> 1.15.0

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Release Notes

bazelbuild/rules_swift (build_bazel_rules_swift)

### [`v1.15.0`](https://togithub.com/bazelbuild/rules_swift/releases/tag/1.15.0) [Compare Source](https://togithub.com/bazelbuild/rules_swift/compare/1.14.0...1.15.0) #### What's Changed - Add `swift.treat_warnings_as_errors` feature - Add support for removed swift fragment for bazel @​ HEAD - Improve error for invalid triples This release is compatible with 5.x LTS, 6.x LTS, 7.x LTS, and bazel 8.x rolling releases ##### MODULE.bazel Snippet ```bzl bazel_dep(name = "rules_swift", version = "1.15.0", repo_name = "build_bazel_rules_swift") ``` ##### Workspace Snippet ```bzl load("@​bazel_tools//tools/build_defs/repo:http.bzl", "http_archive") http_archive( name = "build_bazel_rules_swift", sha256 = "7a9f6b16ef71d54485b1f7a0c8d58815461c4d5ba356c0108b8dbe92d354ff7b", url = "https://github.com/bazelbuild/rules_swift/releases/download/1.15.0/rules_swift.1.15.0.tar.gz", ) load( "@​build_bazel_rules_swift//swift:repositories.bzl", "swift_rules_dependencies", ) swift_rules_dependencies() load( "@​build_bazel_rules_swift//swift:extras.bzl", "swift_rules_extra_dependencies", ) swift_rules_extra_dependencies() ```

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