8277944: JDK 18 - update GA Release Date

Reviewed-by: coffeys

Author: pashh

make/conf/version-numbers.conf

@@ -33,7 +33,7 @@ DEFAULT_VERSION_PATCH=0
 DEFAULT_VERSION_EXTRA1=0
 DEFAULT_VERSION_EXTRA2=0
 DEFAULT_VERSION_EXTRA3=0
-DEFAULT_VERSION_DATE=2022-03-15
+DEFAULT_VERSION_DATE=2022-03-22
 DEFAULT_VERSION_CLASSFILE_MAJOR=62  # "`$EXPR $DEFAULT_VERSION_FEATURE + 44`"
 DEFAULT_VERSION_CLASSFILE_MINOR=0
 DEFAULT_VERSION_DOCS_API_SINCE=11