Bump org.assertj:assertj-core from 3.25.3 to 3.26.0 (#3717)

Author: dependabot[bot]

dependencyManagement/build.gradle.kts

@@ -73,7 +73,7 @@ val DEPENDENCIES = listOf(
   "org.apache.commons:commons-text:1.12.0",
   "com.google.code.gson:gson:2.11.0",
   "com.azure:azure-core-test:1.25.0", // this is not included in azure-sdk-bom
-  "org.assertj:assertj-core:3.25.3",
+  "org.assertj:assertj-core:3.26.0",
   "org.awaitility:awaitility:4.2.1",
   "io.github.hakky54:logcaptor:2.9.2",
   "com.microsoft.jfr:jfr-streaming:1.2.0",