chore(apps): bump the pins that can move without mirroring

Of the 33 apps behind upstream, these five pull straight from a public
registry, so their targets exist already and the bump is real work rather
than a promise:

  strfry          1.0.4        -> 1.1.1
  netbird (nginx) 1.27-alpine  -> 1.31.3-alpine
  pine    (nginx) 1.27-alpine  -> 1.31.3-alpine
  pine-piper      2.2.2        -> 2.4.2
  nostr-rs-relay  0.8.9        -> 0.10.0

All five targets verified present upstream with skopeo before editing, so
none of these can turn into an image-not-found on a node.

Deliberately NOT bumped here, though they are also direct-pull:
core-lightning (v23.08 -> v26.06, ~3 years of schema migrations), gitea
(four minors of DB migrations), and netbird-server/netbird-dashboard —
which have to move in lockstep and carry their own migrations. Those are
each a piece of work, not a line edit.

The other 24 are blocked on something else entirely: their images live in
our mirror and none of the upgrade targets have been mirrored yet, so a
pin bump alone would break every install. That needs registry push
credentials.

These take effect when the catalog is regenerated and re-signed — the
catalog overrides on-disk manifests, so editing here changes nothing on a
node until the signing ceremony.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

apps/netbird/manifest.yml

@@ -18,7 +18,7 @@ app:
   container_name: netbird
 
   container:
-    image: docker.io/library/nginx:1.27-alpine
+    image: docker.io/library/nginx:1.31.3-alpine
     pull_policy: if-not-present
     network: netbird-net
     # Self-signed TLS cert materialised before create — the dashboard needs a