git: openjdk/jdk: 8309934: Update GitHub Actions to use JDK 17 for building jtreg

[Christian Stein]

Changeset: 8aad881e
Author:    Christian Stein <cstein at openjdk.org>
Date:      2023-06-13 20:32:29 +0000
URL:       https://git.openjdk.org/jdk/commit/8aad881e803fddc26f45270f779ff0c0e5a095d8

8309934: Update GitHub Actions to use JDK 17 for building jtreg

Reviewed-by: erikj

! .github/actions/get-jtreg/action.yml