Update plugin gatling to v3.12.0.3 (#9715)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

gradle/libs.versions.toml

@@ -156,7 +156,7 @@ wiremock = { module = "com.github.tomakehurst:wiremock-jre8-standalone", version
 zstd-jni = { module = "com.github.luben:zstd-jni", version = "1.5.6-6" }
 
 [plugins]
-gatling = { id = "io.gatling.gradle", version = "3.12.0.2" }
+gatling = { id = "io.gatling.gradle", version = "3.12.0.3" }
 jmh = { id = "me.champeau.jmh", version = "0.7.2" }
 nessie-run = { id = "org.projectnessie", version = "0.32.2" }
 nexus-publish-plugin = { id = "io.github.gradle-nexus.publish-plugin", version = "2.0.0" }