Revert spring-security-oauth2 to 2.3.6.RELEASE version (#4087)
Revert spring-security-oauth2 to 2.3.6.RELEASE version (#4087)

spring-security-oauth2 2.3.7.RELEASE has a bug that prevents custom
UserCredential classes to be deserialized: https://github.com/spring-projects/spring-security-oauth/commit/b214a25fdd8eae34c8ad803e7022fd17d1c63eb6#diff-28d3f6d7939c6931299a5d3c5e632d58

The change was actually reverted
(https://github.com/spring-projects/spring-security-oauth/commit/e7c2b970000ebd298d8ad15c5347c2e8c00bad2e#diff-28d3f6d7939c6931299a5d3c5e632d58)
but has not made it into a release yet
hispindia/dhis2-Core,msf-oca-his/dhis2-core,dhis2/dhis2-core,hispindia/dhis2-Core,hispindia/dhis2-Core,dhis2/dhis2-core,msf-oca-his/dhis2-core,msf-oca-his/dhis2-core,msf-oca-his/dhis2-core,msf-oca-his/dhis2-core,hispindia/dhis2-Core,dhis2/dhis2-core,dhis2/dhis2-core,hispindia/dhis2-Core,dhis2/dhis2-core