chore(deps): bump immich-app/immich-server in /immich (#54)

Bumps [immich-app/immich-server](https://github.com/immich-app/immich) from v2.5.5 to v2.5.6.
- [Release notes](https://github.com/immich-app/immich/releases)
- [Commits](immich-app/immich@v2.5.5...v2.5.6)

---
updated-dependencies:
- dependency-name: immich-app/immich-server
  dependency-version: v2.5.6
  dependency-type: direct:production
...

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

Author: dependabot[bot]

immich/docker-compose.yml

@@ -12,7 +12,7 @@ name: immich
 services:
   immich-server:
     container_name: immich_server
-    image: ghcr.io/immich-app/immich-server:v2.5.5
+    image: ghcr.io/immich-app/immich-server:v2.5.6
     # extends:
     #   file: hwaccel.transcoding.yml
     #   service: cpu # set to one of [nvenc, quicksync, rkmpp, vaapi, vaapi-wsl] for accelerated transcoding