message: Allow configuring authentication token in test DB client (take 2)
  *Real* Thoth tokens sign the application ID.  So token cannot be
  constant.  Instead pass a function that builds it.
diff: @@ -56,7 +56,7 @@ const requiresPolling: Macro<[Implementation<Context>], Context> = (t, fn) => {
  export function setUpTests<T>(
  { setUp, tearDown }: TestHooks<T>,
  - token = 'SETEC Astronomy',
  + makeToken = (_appId: string, _appEnv: string) => 'SETEC Astronomy',
  ) {
  test.beforeEach(async (t) => {
  const appId = `${nanoid(6)}: ${t.title.replace(/^beforeEach hook for /, '')}`;
  @@ -80,7 +80,7 @@ export function setUpTests<T>(
  collection: 'default',
  auth: {
  v1: {
  - token,
  + token: makeToken(appId, appEnv),
  },
  },
  },
  