chore(logging): make UsersActivationServiceImpl less verbose.

Don't log a confirmation about activation deletion:

2020-08-13 00:30:00.003 [user:  ]  INFO 27305 --- [pool-1-thread-1] r.m.web.feature.site.CronServiceImpl     : Delete expired activation (key: 6kzbgysram, email: [email protected], created: 2020-08-10 00:03:34.0)
2020-08-13 00:30:00.006 [user:  ] DEBUG 27305 --- [pool-1-thread-1] r.m.w.f.a.UsersActivationServiceImpl     : Users activation '6kzbgysram' has been deleted

Follow-up to 04ad2d4 commit.

Author: php-coder

infra/vagrant/provisioning/roles/mystamps-app/templates/application-prod.properties

@@ -29,6 +29,7 @@ spring.liquibase.change-log: classpath:/liquibase/changelog.xml
 logging.file: /data/logs/mystamps.log
 logging.level.root: INFO
 logging.level.ru.mystamps: DEBUG
+logging.level.ru.mystamps.web.feature.account.UsersActivationServiceImpl: INFO
 logging.level.ru.mystamps.web.support.spring.security.SessionLocaleResolverAwareFilter: INFO
 logging.level.ru.mystamps.web.support.mailgun.ApiMailgunEmailSendingStrategy: INFO
 logging.level.org.springframework.web.servlet.handler.SimpleUrlHandlerMapping: WARN

src/main/resources/application-test.properties

@@ -34,6 +34,7 @@ spring.liquibase.change-log: classpath:/liquibase/changelog.xml
 
 logging.level.root: INFO
 logging.level.ru.mystamps: DEBUG
+logging.level.ru.mystamps.web.feature.account.UsersActivationServiceImpl: INFO
 logging.level.ru.mystamps.web.support.spring.security.SessionLocaleResolverAwareFilter: INFO
 logging.level.ru.mystamps.web.feature.category.CategoryServiceImpl: INFO
 logging.level.ru.mystamps.web.feature.country.CountryServiceImpl: INFO