Bump starlette-exporter from 0.15.1 to 0.19.0 (#27)

Bumps [starlette-exporter](https://github.com/stephenhillier/starlette_exporter) from 0.15.1 to 0.19.0.
- [Release notes](https://github.com/stephenhillier/starlette_exporter/releases)
- [Commits](stephenhillier/starlette_exporter@v0.15.1...v0.19.0)

---
updated-dependencies:
- dependency-name: starlette-exporter
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pyproject.toml

@@ -17,7 +17,7 @@ classifiers = [
   "Programming Language :: Python :: Implementation :: PyPy",
 ]
 dependencies = [
-    "starlette_exporter==0.15.1",
+    "starlette_exporter==0.19.0",
     "matter-exceptions>=1.1.0"
 ]
 dynamic = ["version"]