[jdk8u-dev] RFR: 8284389: Improve stability of GHA Pre-submit testing by caching cygwin installer

[zzambers]

Adds cygwin installer caching.

Few notes:
- Cache also added for windows-x86, which is not present on JDK 11.
- Used actions/cache at v3 (I have already done backport updating GHA actions, out of order, before this)

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Commit messages:
 - Backport 869b25975288398a1d60601daacf00a99f51cd56

Changes: https://git.openjdk.org/jdk8u-dev/pull/174/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=174&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8284389
  Stats: 60 lines in 1 file changed: 52 ins; 8 del; 0 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/174.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev pull/174/head:pull/174

PR: https://git.openjdk.org/jdk8u-dev/pull/174