deps(deps): bump python-dotenv from 1.2.2 to 1.2.3

Bumps [python-dotenv](https://github.com/theskumar/python-dotenv) from 1.2.2 to 1.2.3.
- [Release notes](https://github.com/theskumar/python-dotenv/releases)
- [Changelog](https://github.com/theskumar/python-dotenv/blob/main/CHANGELOG.md)
- [Commits](theskumar/python-dotenv@v1.2.2...v1.2.3)

---
updated-dependencies:
- dependency-name: python-dotenv
  dependency-version: 1.2.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pyproject.toml

@@ -31,7 +31,7 @@ dependencies = [
     "fastmcp==3.4.6",
     "httpx[socks]==0.28.1",
     "pydantic==2.13.4",
-    "python-dotenv==1.2.2",
+    "python-dotenv==1.2.3",
     "truststore==0.10.4",
     # websockets is deliberately ABSENT from this list: ha-mcp ships its own
     # private copy (src/ha_mcp/_vendor/websockets, pinned in the vendor