Deprecated ProvisioningApi still used by matrix-appservice-bridge

[bl4ckswordsman]

When using the setup-widget, the following error displays in matrix-hookshot logs:

matrix-hookshot  | ERROR 11:51:55:970 [ProvisioningApi] ApiError: API error M_AS_BAD_TOKEN: Token not found
matrix-hookshot  |     at BridgeWidgetApi.authenticateRequest (/usr/bin/matrix-hookshot/node_modules/matrix-appservice-bridge/lib/provisioning/api.js:200:19)
matrix-hookshot  |     at process.processTicksAndRejections (node:internal/process/task_queues:105:5) {
matrix-hookshot  |   error: 'Token not found',
matrix-hookshot  |   errcode: 'M_AS_BAD_TOKEN',
matrix-hookshot  |   statusCode: 401,
matrix-hookshot  |   additionalContent: {}
matrix-hookshot  | }