termix: manual bump 1.11.2 -> 2.3.2 (Renovate blocked by DH rate-limit)

Renovate's `Pending Approval` checkbox for the termix v2 major was ticked
on Dashboard #6, but the manual Renovate runs that should have processed
it both aborted on Docker Hub's authenticated rate-limit:

  HTTP 429: You have reached your pull rate limit as 'kisfenyo'

The free DH plan caps authenticated pulls at 100/6h; with ~270 deps in
this repo and the multiple runs we've done today, we've exhausted it.
Renovate's behavior on a host 429 is to abort the entire repository run
(`result: external-host-error`), so no further work — including ticked
dashboard approvals — gets done until the quota window resets.

Rather than wait ~3-4 hours, this PR does the bump by hand. Upstream
ghcr.io/lukegus/termix:release-2.3.2 is verified present (Termix-SSH
GitHub Release of 2026-06-04). Termix is stateless (host/cred config
stored in PocketBase but compatible across release-1 and release-2),
so the rollout should be a straightforward image swap.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

termix-system/termix.yaml

@@ -45,7 +45,7 @@ spec:
           # Renovate handles it via a customManagers regex defined in
           # admin-system/renovate.yaml (the kubernetes manager doesn't
           # process inline `# renovate:` comments).
-          image: ghcr.io/lukegus/termix:release-1.11.2
+          image: ghcr.io/lukegus/termix:release-2.3.2
           imagePullPolicy: IfNotPresent
           ports:
             - name: http