Truncate PR title when searching for existing issue

[awly]

ToBeReviewedBot/main.go

Line 74 in 9d3965a

check := fmt.Sprintf("%s in:title repo:%s/%s author:app/%s", title, args.org,

creates an API query including the PR title.
We need to

1. escape the title in the query to avoid producing fake results
2. truncate the title to avoid hitting query size limits https://docs.github.com/en/rest/search/search?apiVersion=2022-11-28#limitations-on-query-length