fix: release TypeType 1.7.3

[Priveetee]

Summary

• Prepare the TypeType 1.7.3 release.
• Point the orchestrator at TypeType-Server v1.7.2, which includes the BiliBili extraction fix.
• Publish the corresponding release notes.

Production behavior

BiliBili stream extraction no longer fails with HTTP 422 when the provider metadata response omits the expected watch object. The updated PipePipeExtractor dependency restores stream discovery while preserving the available audio and video formats.

Issue: #262
Server fix: TypeType-Video/TypeType-Server#83

Deployment requirements

• Publish and verify the TypeType-Server v1.7.2 image before rollout.
• Pin production to the verified immutable image digest.
• No frontend change, configuration change or manual database migration is required.

Runtime verification

• GET /api/streams/bilibili for a representative BiliBili video returns HTTP 200.
• The response contains non-empty audio and video stream lists.
• /api/instance reports the new Server revision after rollout.

Tests

• TypeType-Server PR checks are green, including tests, coverage and OpenAPI validation.
• The BiliBili endpoint was reproduced against production before the fix and validated against the updated server build.

Rollback

Restore the previous TypeType-Server image digest and the previous TypeType-Server submodule revision, then recreate only the Server container.