chore(deps-dev): bump io.gatling.highcharts:gatling-charts-highcharts (#311)

Bumps [io.gatling.highcharts:gatling-charts-highcharts](https://github.com/gatling/gatling-highcharts) from 3.9.5 to 3.14.9.
- [Commits](gatling/gatling-highcharts@v3.9.5...v3.14.9)

---
updated-dependencies:
- dependency-name: io.gatling.highcharts:gatling-charts-highcharts
  dependency-version: 3.14.9
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]

apps/backend/pom.xml

@@ -486,7 +486,7 @@
 				<dependency>
 					<groupId>io.gatling.highcharts</groupId>
 					<artifactId>gatling-charts-highcharts</artifactId>
-					<version>3.9.5</version>
+					<version>3.14.9</version>
 					<scope>test</scope>
 				</dependency>
 				<dependency>