RFR: 8343546: GHA: Cache required dependencies in master-branch workflow

[Severin Gehwolf]

On Fri, 4 Jul 2025 13:21:40 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> GHA isolation rules say that workflow caches from the parent branches can be used by descendant branches.

Is a corollary of that that one ought to keep one's fork `master` branch in sync with the main repo's (`openjdk/jdk`) `master` branch? I usually only do this locally (on my work machine), but not on the github fork. Just making sure I understand this right.

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PR Comment: https://git.openjdk.org/jdk/pull/26134#issuecomment-3036477280