SONAR-32283 Update webapp version for dashboards LTA

Author: henri-priest-sonarsource

gradle.properties

@@ -36,7 +36,7 @@ elasticSearchLinuxSha512=d53f8d3efeb830b73704873d082b940158deb9387937ed817eea89d
 projectType=application
 artifactoryUrl=https://repox.jfrog.io/repox
 jre_release_name=jdk-21.0.12.1+1
-webappVersion=2026.5.0.73927
+webappVersion=2026.5.0.74159
 useLocalArchitecture=false
 useLocalCagHub=false
 useLocalUnifiedCore=false