build(deps): adopt ZB.MOM.WW.Auth 0.2.0 and MxGateway client/contracts 0.2.0

Brings the two shared-library families that had fallen behind the Gitea feed up
to latest; the other 20 ZB.MOM.WW.* packages were already at feed-latest.

Auth 0.1.5 -> 0.2.0 is LDAP failover only: a new LdapOptions.FallbackServers
list, an endpoint walk with sticky preference in LdapAuthService, and per-hop
warning logs. Purely additive — with FallbackServers empty (the committed
default everywhere) the walk collapses to exactly one attempt, so behaviour is
unchanged until someone opts in. Nothing in Auth.ApiKeys changed, so there is
no key-store schema migration to sequence.

MxGateway 0.1.1 -> 0.2.0 matters more than the version gap suggests: upstream
records that four clients "had drifted onto the already-published 0.1.2/0.1.1
while their APIs kept changing underneath", so 0.1.1 was a stale label rather
than a stable point. Real deltas since: status/HRESULT reply validation made
conformant across clients (CLI-37/38), the ReplayGap reconnect sentinel
surfaced as a typed signal (CLI-15), and typed single-item command parity
(CLI-04/30).

The one change touching the write path — correlating OnWriteComplete onto plain
Write/Write2 replies — is server-side. Its proto diff is comment-only and the
behaviour lives in the Worker, so ScadaBridge gains the correlated statuses when
the gateway server is upgraded, not from this bump. No wire-contract break.

Verified: restore and full solution build clean (0 warnings, 0 errors); all 22
shared packages resolve to a single version each across all 57 projects, with no
split resolution. Security 181/181, InboundAPI 269/269, DataConnectionLayer
277/277 — the three suites that consume these packages directly.

Full-sweep residue is pre-existing and unrelated, confirmed 3/3 green in
isolation for the first two:
  - GrpcCentralTransportTests.DeadlineExceeded_IsNotRetriedOnThePeer — a
    saturated TestServer can fail to START the call, which IsConnectFailure
    correctly treats as provably-unsent and fails over; the harness cannot
    guarantee the DeadlineExceeded it means to exercise.
  - AuditLogOptionsBindingTests.Filter_PicksUp_NewBodyRedactor_OnConfigReload —
    not a reload race (the test is synchronous); it trips the 100 ms compile
    budget in AuditRegexCache, which fails OPEN. Filed as its own issue.
  - CentralUI Playwright 159/173 — login failures against the running rig,
    which was built from the pre-bump image and so cannot be affected by this
    change: 20 from the known SEC-36 GLAuth password rotation, 136 cascading
    from the login throttle.

The rig still runs the previous libraries; it needs a docker/deploy.sh rebuild
to pick these up.

Directory.Packages.props

@@ -95,13 +95,13 @@
     <PackageVersion Include="ZB.MOM.WW.Health.EntityFrameworkCore" Version="0.3.0" />
     <PackageVersion Include="ZB.MOM.WW.Telemetry" Version="0.1.0" />
     <PackageVersion Include="ZB.MOM.WW.Telemetry.Serilog" Version="0.1.0" />
-    <PackageVersion Include="ZB.MOM.WW.MxGateway.Client" Version="0.1.1" />
+    <PackageVersion Include="ZB.MOM.WW.MxGateway.Client" Version="0.2.0" />
-    <PackageVersion Include="ZB.MOM.WW.MxGateway.Contracts" Version="0.1.1" />
+    <PackageVersion Include="ZB.MOM.WW.MxGateway.Contracts" Version="0.2.0" />
     <PackageVersion Include="ZB.MOM.WW.Configuration" Version="0.1.0" />
-    <PackageVersion Include="ZB.MOM.WW.Auth.Abstractions" Version="0.1.5" />
+    <PackageVersion Include="ZB.MOM.WW.Auth.Abstractions" Version="0.2.0" />
-    <PackageVersion Include="ZB.MOM.WW.Auth.Ldap" Version="0.1.5" />
+    <PackageVersion Include="ZB.MOM.WW.Auth.Ldap" Version="0.2.0" />
-    <PackageVersion Include="ZB.MOM.WW.Auth.ApiKeys" Version="0.1.5" />
+    <PackageVersion Include="ZB.MOM.WW.Auth.ApiKeys" Version="0.2.0" />
-    <PackageVersion Include="ZB.MOM.WW.Auth.AspNetCore" Version="0.1.5" />
+    <PackageVersion Include="ZB.MOM.WW.Auth.AspNetCore" Version="0.2.0" />
     <PackageVersion Include="ZB.MOM.WW.Audit" Version="0.1.0" />
     <PackageVersion Include="ZB.MOM.WW.Theme" Version="0.4.1" />
     <PackageVersion Include="ZB.MOM.WW.Secrets" Version="0.6.2" />