Update to gradle 9

Author: JordonPhillips

buildSrc/src/main/kotlin/smithy.java-conventions.gradle.kts

@@ -72,7 +72,7 @@ tasks {
             metaInf.with(licenseSpec)
             inputs.property("moduleName", project.extra.get("moduleName"))
             manifest {
-                attributes("Automatic-Module-Name" to project.extra.get("moduleName"))
+                attributes(mapOf("Automatic-Module-Name" to project.extra.get("moduleName")))
             }
         }
     }

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME