Bump io.gatling:gatling-http from 3.12.0 to 3.13.1 in /gatling

Bumps [io.gatling:gatling-http](https://github.com/gatling/gatling) from 3.12.0 to 3.13.1.
- [Commits](gatling/gatling@v3.12.0...v3.13.1)

---
updated-dependencies:
- dependency-name: io.gatling:gatling-http
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

gatling/build.gradle.kts

@@ -13,7 +13,7 @@ repositories {
 
 dependencies {
     //region gatling
-    implementation("io.gatling:gatling-http:3.12.0")
+    implementation("io.gatling:gatling-http:3.13.1")
     implementation("io.gatling:gatling-core:3.12.0")
     implementation("io.gatling:gatling-app:3.12.0")
     gatlingRuntimeOnly("io.gatling:gatling-charts:3.13.1")