chore: migrate java8 to java21 mail#10167
Draft
Alan5142 wants to merge 6 commits intoGoogleCloudPlatform:mainfrom
Draft
chore: migrate java8 to java21 mail#10167Alan5142 wants to merge 6 commits intoGoogleCloudPlatform:mainfrom
Alan5142 wants to merge 6 commits intoGoogleCloudPlatform:mainfrom