git: openjdk/jdk: 8284389: Improve stability of GHA Pre-submit testing by caching cygwin installer

[Christoph Langer]

Changeset: 61fcf2f6
Author:    Christoph Langer <clanger at openjdk.org>
Date:      2022-04-07 06:02:59 +0000
URL:       https://git.openjdk.java.net/jdk/commit/61fcf2f67ff16bee92a5279e7bcacc79fc8f37ad

8284389: Improve stability of GHA Pre-submit testing by caching cygwin installer

Reviewed-by: shade

! .github/workflows/submit.yml