0.2.40 - H2D cloud print fixed (auto PoP retry on 403)

Fixed cloud print failing with error -3120 on H2D printers (issue #6 and the OrcaCloud comments): POST /v1/user-service/my/task answered HTTP 403 to the bearer-only request on every region, and the mytask_pop = auto default only attached the proof-of-possession header pair on the CN cloud.

The plugin now retries that call once with the pair attached whenever the first attempt comes back 403, so H2D printers print without any config edit. Explicit mytask_pop = 1 / 0 in obn.conf still win on the first attempt, and every printer that worked before sends the exact same first request.

Libraries rebuilt from open-bamboo-networking 8979ec3 on all three platforms.