Update dependency io.gatling:gatling-maven-plugin to v4.20.0

Author: renovate[bot]

pom.xml

@@ -52,7 +52,7 @@
     <cyclonedx.core.version>10.2.1</cyclonedx.core.version>
     <datatables.version>2.3.0</datatables.version>
     <dependency-check-maven.version>12.1.3</dependency-check-maven.version>
-    <gatling-maven-plugin.version>4.19.2</gatling-maven-plugin.version>
+    <gatling-maven-plugin.version>4.20.0</gatling-maven-plugin.version>
     <gatling.version>3.14.3</gatling.version>
     <gcp.sdk.version>7.0.0</gcp.sdk.version>
     <github.button.version>2.14.1</github.button.version>