git: openjdk/jdk: 8258143: Update --release 16 symbol information for JDK 16 build 30 or later

[Joe Darcy]

Changeset: d20d2fa9
Author:    Joe Darcy <darcy at openjdk.org>
Date:      2021-01-06 16:26:23 +0000
URL:       https://git.openjdk.java.net/jdk/commit/d20d2fa9

8258143: Update --release 16 symbol information for JDK 16 build 30 or later

Reviewed-by: iris, erikj

! make/data/symbols/java.desktop-G.sym.txt