Revert "Update to Gradle 6.1"
Revert "Update to Gradle 6.1"

This reverts commit 7f9715d9513280339065a329f52dbc09b0b2aad3.

spring-projects/spring-security,jgrandja/spring-security,djechelon/spring-security,spring-projects/spring-security,rwinch/spring-security,fhanik/spring-security,djechelon/spring-security,spring-projects/spring-security,fhanik/spring-security,djechelon/spring-security,jgrandja/spring-security,jgrandja/spring-security,jgrandja/spring-security,rwinch/spring-security,rwinch/spring-security,spring-projects/spring-security,fhanik/spring-security,djechelon/spring-security,fhanik/spring-security,jgrandja/spring-security,spring-projects/spring-security,spring-projects/spring-security,fhanik/spring-security,rwinch/spring-security,jgrandja/spring-security,rwinch/spring-security,djechelon/spring-security,rwinch/spring-security,fhanik/spring-security,spring-projects/spring-security