build(deps-dev): bump ruff from 0.15.14 to 0.15.15

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.15.14 to 0.15.15.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](https://github.com/astral-sh/ruff/compare/0.15.14...0.15.15)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

pyproject.toml

@@ -71,7 +71,7 @@ chroma = "mempalace.backends.chroma:ChromaBackend"
 dev = [
     "pytest>=7.0",
     "pytest-cov>=4.0",
-    "ruff==0.15.14",
+    "ruff==0.15.15",
     "psutil>=5.9",
     # Property-based testing — generates hundreds of random inputs per
     # test to find counterexamples the hand-written positive tests miss.
@@ -123,7 +123,7 @@ extract = [
 dev = [
     "pytest>=7.0",
     "pytest-cov>=4.0",
-    "ruff==0.15.14",
+    "ruff==0.15.15",
     "psutil>=5.9",
     "hypothesis>=6.0",
     "pre-commit>=3.0",