Update spring-boot version to 2.6.7
Update spring-boot version to 2.6.7

jhipster/generator-jhipster,vivekmore/generator-jhipster,liseri/generator-jhipster,vivekmore/generator-jhipster,liseri/generator-jhipster,atomfrede/generator-jhipster,liseri/generator-jhipster,ctamisier/generator-jhipster,ctamisier/generator-jhipster,vivekmore/generator-jhipster,atomfrede/generator-jhipster,liseri/generator-jhipster,ctamisier/generator-jhipster,ctamisier/generator-jhipster,atomfrede/generator-jhipster,jhipster/generator-jhipster,jhipster/generator-jhipster,atomfrede/generator-jhipster,jhipster/generator-jhipster,vivekmore/generator-jhipster,jhipster/generator-jhipster,atomfrede/generator-jhipster,vivekmore/generator-jhipster,liseri/generator-jhipster,ctamisier/generator-jhipster