Bump log4j-core from 2.9.0 to 2.13.2 in /recommender/OfflineRecommender#4

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dependabot/maven/recommender/OfflineRecommender/org.apache.logging.log4j-log4j-core-2.13.2ABigdataer/MovieRecommendSystem:dependabot/maven/recommender/OfflineRecommender/org.apache.logging.log4j-log4j-core-2.13.2Copy head branch name to clipboard