build(deps): bump esphome/esphome in /docker/home/esphome

Bumps [esphome/esphome](https://github.com/esphome/esphome) from 2026.6.4 to 2026.7.3.
- [Release notes](https://github.com/esphome/esphome/releases)
- [Commits](https://github.com/esphome/esphome/compare/2026.6.4...2026.7.3)

---
updated-dependencies:
- dependency-name: esphome/esphome
  dependency-version: 2026.7.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

docker/home/esphome/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   esphome:
-    image: ghcr.io/esphome/esphome:2026.6.4
+    image: ghcr.io/esphome/esphome:2026.7.3
     ports:
       - "6052"
     networks: