git: openjdk/jdk11u-dev: 8305721: add `make compile-commands` artifacts to .gitignore

[Paul Hohensee]

Changeset: c8e66301
Author:    Joshua Cao <joshcao at amazon.com>
Committer: Paul Hohensee <phh at openjdk.org>
Date:      2023-04-13 16:58:25 +0000
URL:       https://git.openjdk.org/jdk11u-dev/commit/c8e66301f5bb9777db766d12797365bc98872817

8305721: add `make compile-commands` artifacts to .gitignore

Reviewed-by: clanger
Backport-of: 9e20382311c58bd172abc98bc0a6757c3a64dda1

! .gitignore