Bump bazel_skylib from 1.8.1 to 1.9.0

Bumps [bazel_skylib](https://github.com/bazelbuild/bazel-skylib) from 1.8.1 to 1.9.0.
- [Release notes](https://github.com/bazelbuild/bazel-skylib/releases)
- [Changelog](https://github.com/bazelbuild/bazel-skylib/blob/main/CHANGELOG.md)
- [Commits](bazelbuild/bazel-skylib@1.8.1...1.9.0)

---
updated-dependencies:
- dependency-name: bazel_skylib
  dependency-version: 1.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

MODULE.bazel

@@ -22,7 +22,7 @@ bazel_dep(name = "rules_pkg", version = "1.2.0")
 bazel_dep(name = "rules_nodejs", version = "6.7.3")
 bazel_dep(name = "rules_python", version = "1.9.0")
 bazel_dep(name = "rules_shell", version = "0.6.1")
-bazel_dep(name = "bazel_skylib", version = "1.8.1")
+bazel_dep(name = "bazel_skylib", version = "1.9.0")
 bazel_dep(name = "abseil-cpp", version = "20260107.1", repo_name = "absl")
 bazel_dep(name = "nlohmann_json", version = "3.11.3", repo_name = "json")
 bazel_dep(name = "fmt", version = "12.1.0-codeql.1")