Bump gson from 2.8.1 to 2.8.9 in /rest/books#12

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masterbomeng/codes:masterfrom

dependabot/maven/rest/books/com.google.code.gson-gson-2.8.9bomeng/codes:dependabot/maven/rest/books/com.google.code.gson-gson-2.8.9Copy head branch name to clipboard