関連ワード:  spring boot java 8 support    spring boot jdk 8 support    spring boot java 8 compatibility    spring boot java 8 compatibility version    spring boot 3 java 8 support    spring boot 3 java 8 compatibility    spring boot version support java 8    spring boot 2.7 support java 8    spring boot 2 supports java 8    does spring boot support java 8