[Snyk] Security upgrade org.webjars:bootstrap from 3.3.6 to 4.0.0#18

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snyk-fix-faa8ca4f86c1f0205328c83e1c02450csuhasgajakosh/spring-boot-developer-code:snyk-fix-faa8ca4f86c1f0205328c83e1c02450cCopy head branch name to clipboard