Roll bind-operator to v0.2.5 (intra-cluster NOTIFY fix) (#289)

Deploy bind-operator v0.2.5 (bind-operator#14): secondaries now carry an explicit allow-notify for the primary pod IP, so dynamic-zone updates propagate in seconds instead of the ~1h SOA refresh. Unblocks the external-dns migration parity gate (argocd-apps#288) and speeds up the dns-updater zones on bind-authoritative.

- Bumps the operator image to git.unkin.net/unkin/bind-operator:v0.2.5 (confirmed in registry)
- Bumps the CRD install pin to the v0.2.5 tag

On sync the operator re-renders cluster ConfigMaps; the config-hash change rolls the bind secondaries, which then accept the primary's NOTIFYs.

Reviewed-on: #289
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>

apps/base/bind-system/deployment.yaml

@@ -21,7 +21,7 @@ spec:
         runAsNonRoot: true
       containers:
         - name: operator
-          image: git.unkin.net/unkin/bind-operator:v0.2.4
+          image: git.unkin.net/unkin/bind-operator:v0.2.5
           args:
             - --metrics-bind-address=:8080
             - --health-probe-bind-address=:8081

apps/base/bind-system/kustomization.yaml

@@ -6,7 +6,7 @@ resources:
   - namespace.yaml
   # CRDs are pulled from the bind-operator repo at the matching tag rather than
   # vendored here, so they never drift from the operator.
-  - https://git.unkin.net/unkin/bind-operator/raw/tag/v0.2.4/config/crd/install.yaml
+  - https://git.unkin.net/unkin/bind-operator/raw/tag/v0.2.5/config/crd/install.yaml
   - rbac.yaml
   - deployment.yaml
   - vpa.yaml