ignore files by glob/regex

[oreporan]

Hey
We have some auto generated json file that has flag names.
It's managed by another bot we have. We want to exclude this file from the current action (find-code-references-in-pull-request)

[sloloris]

Hi @oreporan! I have filed a feature request internally and circle back here when we get to it.

(Internal note: REL-9127)