Bump spark-core from 2.3 to 2.7.2 in /create_blog_authors#1

dependabot[bot] wants to merge 1 commit intomasterjaszhou/dp:masterfrom

dependabot/maven/create_blog_authors/com.sparkjava-spark-core-2.7.2jaszhou/dp:dependabot/maven/create_blog_authors/com.sparkjava-spark-core-2.7.2Copy head branch name to clipboard