Update plugin org.springframework.boot to v2.7.4 (#840)
Update plugin org.springframework.boot to v2.7.4 (#840)

Co-authored-by: renovate[bot] <1d2c67ad0e3429d16690809152e1083ff6af8a05@users.noreply.github.com>
line/line-bot-sdk-java,line/line-bot-sdk-java,line/line-bot-sdk-java,line/line-bot-sdk-java