Prepare to release v0.26.0

[jsdw]

This is just a small release; the only breaking change is the addition of max_frame_size to WsTransportClientBuilder, which necessitates a minor version bump.

The other changes are as follows:

[Changed]

• Fix new Rust 1.89 lifetime warnings and impl ToRpcParams on serde_json::Map (#1594)
• feat(keepalive): expose tcp keep-alive options (#1583)
• chore: expose TowerServiceNoHttp type (#1588)
• chore(deps): update socket2 requirement from 0.5.1 to 0.6.0 (#1587)
• Allow max websocket frame size to be set (#1585)
• chore(deps): update pprof requirement from 0.14 to 0.15 (#1577)
• Expose jsonrpsee_http_client::RpcService (#1574)

[Fixed]

• fix: Remove username and password from URL after building Authorization header (#1581)