git: openjdk/jdk8u-dev: 8290000: Bump macOS GitHub actions to macOS 11

[Christoph Langer]

Changeset: 39fa6fb1
Author:    George Adams <georgeadams1995 at gmail.com>
Committer: Christoph Langer <clanger at openjdk.org>
Date:      2022-08-04 07:11:16 +0000
URL:       https://git.openjdk.org/jdk8u-dev/commit/39fa6fb17215d823aacad51669750b76c987973d

8290000: Bump macOS GitHub actions to macOS 11

Reviewed-by: sgehwolf
Backport-of: 4e6cd67fec3d978f4c8c1aed95a1d09b544eff68

! .github/workflows/submit.yml