ci: bump io.gatling.highcharts:gatling-charts-highcharts from 3.14.9 to 3.15.0 in /gatling#1185

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dependabot/maven/gatling/io.gatling.highcharts-gatling-charts-highcharts-3.15.0dunglas/mercure:dependabot/maven/gatling/io.gatling.highcharts-gatling-charts-highcharts-3.15.0Copy head branch name to clipboard