RFR: 1678: Missed calling lastBatchHandled in TestInfoBot

[Zhao Song]

On Wed, 16 Nov 2022 20:21:39 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> After spending the extra time documenting the need for calling "lastBatchHandled" on the PullRequestPoller, I still managed to forget in the TestInfoBot.

LGTM, just a small glitch about the comment of `PullRequestPoller#lastBatchedHandled`, you said 'After calling getUpdatedPullRequests()', but the actual method name is `UpdatedPullRequests()`.

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PR: https://git.openjdk.org/skara/pull/1420