git: openjdk/jdk21u: master: 2 new changesets

[Aleksey Shipilev]

Changeset: 230df992
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2023-08-03 15:34:23 +0000
URL:       https://git.openjdk.org/jdk21u/commit/230df9923e32e822daa05ae32ce93cece43b28df

8312591: GCC 6 build failure after JDK-8280982

Backport-of: 9454b2bbe130fdbe86485b928b80d19156c709ee

! make/modules/java.desktop/lib/Awt2dLibraries.gmk

Changeset: 40092ed2
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2023-08-03 15:35:31 +0000
URL:       https://git.openjdk.org/jdk21u/commit/40092ed235cc8adfad5a981aae316c5a3d889b16

8313428: GHA: Bump GCC versions for July 2023 updates

Backport-of: ec2f38fd389dc51dc4d8925e037a8bf2e64a3722

! .github/workflows/main.yml